Home / 3,215.50-4,830.65-2,280.76

Finding the Fourth Proportional to 3,215.50, 4,830.65 and 2,280.76

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Solution

The fourth proportional to 3,215.50, 4,830.65 and 2,280.76 is: 3,426.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.50 : 4,830.65 = 2,280.76 : x
  2. Step 2: Convert to fraction form
    3,215.50/4,830.65 = 2,280.76/x
  3. Step 3: Cross multiply
    3,215.50x = 4,830.65 × 2,280.76
  4. Step 4: Simplify right side
    3,215.50x = 11,017,549.22
  5. Step 5: Solve for x
    x = 11,017,549.22/3,215.50
  6. Step 6: Final answer
    x = 3,426.39

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Half scale
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Double scale
Find fourth proportional to 3,216.50, 4,832.15 and 2,281.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.