Home / 1,148.66-1,715.19-1,117.52

Finding the Fourth Proportional to 1,148.66, 1,715.19 and 1,117.52

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Solution

The fourth proportional to 1,148.66, 1,715.19 and 1,117.52 is: 1,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.66 : 1,715.19 = 1,117.52 : x
  2. Step 2: Convert to fraction form
    1,148.66/1,715.19 = 1,117.52/x
  3. Step 3: Cross multiply
    1,148.66x = 1,715.19 × 1,117.52
  4. Step 4: Simplify right side
    1,148.66x = 1,916,767.61
  5. Step 5: Solve for x
    x = 1,916,767.61/1,148.66
  6. Step 6: Final answer
    x = 1,668.70

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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.