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Finding the Fourth Proportional to 8,897.79, 13,346.24 and 2,657.87

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Solution

The fourth proportional to 8,897.79, 13,346.24 and 2,657.87 is: 3,986.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,897.79 : 13,346.24 = 2,657.87 : x
  2. Step 2: Convert to fraction form
    8,897.79/13,346.24 = 2,657.87/x
  3. Step 3: Cross multiply
    8,897.79x = 13,346.24 × 2,657.87
  4. Step 4: Simplify right side
    8,897.79x = 35,472,490.89
  5. Step 5: Solve for x
    x = 35,472,490.89/8,897.79
  6. Step 6: Final answer
    x = 3,986.66

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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.