Home / 1,337.02-2,006.29-720.71

Finding the Fourth Proportional to 1,337.02, 2,006.29 and 720.71

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Solution

The fourth proportional to 1,337.02, 2,006.29 and 720.71 is: 1,081.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,337.02 : 2,006.29 = 720.71 : x
  2. Step 2: Convert to fraction form
    1,337.02/2,006.29 = 720.71/x
  3. Step 3: Cross multiply
    1,337.02x = 2,006.29 × 720.71
  4. Step 4: Simplify right side
    1,337.02x = 1,445,953.27
  5. Step 5: Solve for x
    x = 1,445,953.27/1,337.02
  6. Step 6: Final answer
    x = 1,081.47

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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.