Home / 1,613.02-2,419.20-517.08

Finding the Fourth Proportional to 1,613.02, 2,419.20 and 517.08

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Solution

The fourth proportional to 1,613.02, 2,419.20 and 517.08 is: 775.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.02 : 2,419.20 = 517.08 : x
  2. Step 2: Convert to fraction form
    1,613.02/2,419.20 = 517.08/x
  3. Step 3: Cross multiply
    1,613.02x = 2,419.20 × 517.08
  4. Step 4: Simplify right side
    1,613.02x = 1,250,919.94
  5. Step 5: Solve for x
    x = 1,250,919.94/1,613.02
  6. Step 6: Final answer
    x = 775.51

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Double scale
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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.