Home / 3,210.75-4,428.41-2,217.69

Finding the Fourth Proportional to 3,210.75, 4,428.41 and 2,217.69

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Solution

The fourth proportional to 3,210.75, 4,428.41 and 2,217.69 is: 3,058.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.75 : 4,428.41 = 2,217.69 : x
  2. Step 2: Convert to fraction form
    3,210.75/4,428.41 = 2,217.69/x
  3. Step 3: Cross multiply
    3,210.75x = 4,428.41 × 2,217.69
  4. Step 4: Simplify right side
    3,210.75x = 9,820,829.48
  5. Step 5: Solve for x
    x = 9,820,829.48/3,210.75
  6. Step 6: Final answer
    x = 3,058.73

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Find fourth proportional to 1,605.38, 2,214.20 and 1,108.85
Half scale
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Double scale
Find fourth proportional to 3,211.75, 4,429.78 and 2,218.69
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.