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Finding the Fourth Proportional to 5,423.52, 8,123.94 and 4,321.92

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Solution

The fourth proportional to 5,423.52, 8,123.94 and 4,321.92 is: 6,473.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.52 : 8,123.94 = 4,321.92 : x
  2. Step 2: Convert to fraction form
    5,423.52/8,123.94 = 4,321.92/x
  3. Step 3: Cross multiply
    5,423.52x = 8,123.94 × 4,321.92
  4. Step 4: Simplify right side
    5,423.52x = 35,111,018.76
  5. Step 5: Solve for x
    x = 35,111,018.76/5,423.52
  6. Step 6: Final answer
    x = 6,473.84

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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.