Home / 1,407.04-2,115.11-1,136.70

Finding the Fourth Proportional to 1,407.04, 2,115.11 and 1,136.70

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Solution

The fourth proportional to 1,407.04, 2,115.11 and 1,136.70 is: 1,708.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.04 : 2,115.11 = 1,136.70 : x
  2. Step 2: Convert to fraction form
    1,407.04/2,115.11 = 1,136.70/x
  3. Step 3: Cross multiply
    1,407.04x = 2,115.11 × 1,136.70
  4. Step 4: Simplify right side
    1,407.04x = 2,404,248.38
  5. Step 5: Solve for x
    x = 2,404,248.38/1,407.04
  6. Step 6: Final answer
    x = 1,708.73

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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.