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Finding the Fourth Proportional to 2,658.82, 3,988.14 and 710.92

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Solution

The fourth proportional to 2,658.82, 3,988.14 and 710.92 is: 1,066.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.82 : 3,988.14 = 710.92 : x
  2. Step 2: Convert to fraction form
    2,658.82/3,988.14 = 710.92/x
  3. Step 3: Cross multiply
    2,658.82x = 3,988.14 × 710.92
  4. Step 4: Simplify right side
    2,658.82x = 2,835,248.49
  5. Step 5: Solve for x
    x = 2,835,248.49/2,658.82
  6. Step 6: Final answer
    x = 1,066.36

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1.5x scale

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.