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Finding the Fourth Proportional to 8,532.40, 12,811.80 and 4,644.40

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Solution

The fourth proportional to 8,532.40, 12,811.80 and 4,644.40 is: 6,973.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,532.40 : 12,811.80 = 4,644.40 : x
  2. Step 2: Convert to fraction form
    8,532.40/12,811.80 = 4,644.40/x
  3. Step 3: Cross multiply
    8,532.40x = 12,811.80 × 4,644.40
  4. Step 4: Simplify right side
    8,532.40x = 59,503,123.92
  5. Step 5: Solve for x
    x = 59,503,123.92/8,532.40
  6. Step 6: Final answer
    x = 6,973.79

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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.