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Finding the Fourth Proportional to 8,889.76, 13,327.08 and 5,429.44

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Solution

The fourth proportional to 8,889.76, 13,327.08 and 5,429.44 is: 8,139.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.76 : 13,327.08 = 5,429.44 : x
  2. Step 2: Convert to fraction form
    8,889.76/13,327.08 = 5,429.44/x
  3. Step 3: Cross multiply
    8,889.76x = 13,327.08 × 5,429.44
  4. Step 4: Simplify right side
    8,889.76x = 72,358,581.24
  5. Step 5: Solve for x
    x = 72,358,581.24/8,889.76
  6. Step 6: Final answer
    x = 8,139.54

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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.