Home / 2,210.12-3,049.53-1,266.21

Finding the Fourth Proportional to 2,210.12, 3,049.53 and 1,266.21

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Solution

The fourth proportional to 2,210.12, 3,049.53 and 1,266.21 is: 1,747.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.12 : 3,049.53 = 1,266.21 : x
  2. Step 2: Convert to fraction form
    2,210.12/3,049.53 = 1,266.21/x
  3. Step 3: Cross multiply
    2,210.12x = 3,049.53 × 1,266.21
  4. Step 4: Simplify right side
    2,210.12x = 3,861,340.63
  5. Step 5: Solve for x
    x = 3,861,340.63/2,210.12
  6. Step 6: Final answer
    x = 1,747.12

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Half scale
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Find fourth proportional to 2,211.12, 3,050.91 and 1,267.21
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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.