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Finding the Fourth Proportional to 5,149.58, 7,658.13 and 4,985.56

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Solution

The fourth proportional to 5,149.58, 7,658.13 and 4,985.56 is: 7,414.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.58 : 7,658.13 = 4,985.56 : x
  2. Step 2: Convert to fraction form
    5,149.58/7,658.13 = 4,985.56/x
  3. Step 3: Cross multiply
    5,149.58x = 7,658.13 × 4,985.56
  4. Step 4: Simplify right side
    5,149.58x = 38,180,066.60
  5. Step 5: Solve for x
    x = 38,180,066.60/5,149.58
  6. Step 6: Final answer
    x = 7,414.21

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1.5x scale

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.