Home / 1,147.14-1,713.24-916.38

Finding the Fourth Proportional to 1,147.14, 1,713.24 and 916.38

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Solution

The fourth proportional to 1,147.14, 1,713.24 and 916.38 is: 1,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.14 : 1,713.24 = 916.38 : x
  2. Step 2: Convert to fraction form
    1,147.14/1,713.24 = 916.38/x
  3. Step 3: Cross multiply
    1,147.14x = 1,713.24 × 916.38
  4. Step 4: Simplify right side
    1,147.14x = 1,569,978.87
  5. Step 5: Solve for x
    x = 1,569,978.87/1,147.14
  6. Step 6: Final answer
    x = 1,368.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.