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Finding the Fourth Proportional to 2,691.86, 3,715.07 and 1,573.16

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Solution

The fourth proportional to 2,691.86, 3,715.07 and 1,573.16 is: 2,171.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.86 : 3,715.07 = 1,573.16 : x
  2. Step 2: Convert to fraction form
    2,691.86/3,715.07 = 1,573.16/x
  3. Step 3: Cross multiply
    2,691.86x = 3,715.07 × 1,573.16
  4. Step 4: Simplify right side
    2,691.86x = 5,844,399.52
  5. Step 5: Solve for x
    x = 5,844,399.52/2,691.86
  6. Step 6: Final answer
    x = 2,171.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.