Home / 1,491.13-2,237.10-517.11

Finding the Fourth Proportional to 1,491.13, 2,237.10 and 517.11

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Solution

The fourth proportional to 1,491.13, 2,237.10 and 517.11 is: 775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.13 : 2,237.10 = 517.11 : x
  2. Step 2: Convert to fraction form
    1,491.13/2,237.10 = 517.11/x
  3. Step 3: Cross multiply
    1,491.13x = 2,237.10 × 517.11
  4. Step 4: Simplify right side
    1,491.13x = 1,156,826.78
  5. Step 5: Solve for x
    x = 1,156,826.78/1,491.13
  6. Step 6: Final answer
    x = 775.81

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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.