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Finding the Fourth Proportional to 8,889.72, 13,337.64 and 3,962.76

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Solution

The fourth proportional to 8,889.72, 13,337.64 and 3,962.76 is: 5,945.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.72 : 13,337.64 = 3,962.76 : x
  2. Step 2: Convert to fraction form
    8,889.72/13,337.64 = 3,962.76/x
  3. Step 3: Cross multiply
    8,889.72x = 13,337.64 × 3,962.76
  4. Step 4: Simplify right side
    8,889.72x = 52,853,866.29
  5. Step 5: Solve for x
    x = 52,853,866.29/8,889.72
  6. Step 6: Final answer
    x = 5,945.50

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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.