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Finding the Fourth Proportional to 8,935.79, 12,332.98 and 5,158.43

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Solution

The fourth proportional to 8,935.79, 12,332.98 and 5,158.43 is: 7,119.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.79 : 12,332.98 = 5,158.43 : x
  2. Step 2: Convert to fraction form
    8,935.79/12,332.98 = 5,158.43/x
  3. Step 3: Cross multiply
    8,935.79x = 12,332.98 × 5,158.43
  4. Step 4: Simplify right side
    8,935.79x = 63,618,726.56
  5. Step 5: Solve for x
    x = 63,618,726.56/8,935.79
  6. Step 6: Final answer
    x = 7,119.54

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