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Finding the Fourth Proportional to 8,993.61, 13,490.42 and 3,151.89

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Solution

The fourth proportional to 8,993.61, 13,490.42 and 3,151.89 is: 4,727.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.61 : 13,490.42 = 3,151.89 : x
  2. Step 2: Convert to fraction form
    8,993.61/13,490.42 = 3,151.89/x
  3. Step 3: Cross multiply
    8,993.61x = 13,490.42 × 3,151.89
  4. Step 4: Simplify right side
    8,993.61x = 42,520,304.13
  5. Step 5: Solve for x
    x = 42,520,304.13/8,993.61
  6. Step 6: Final answer
    x = 4,727.84

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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.