Home / 8,432.40-11,635.20-5,447.64

Finding the Fourth Proportional to 8,432.40, 11,635.20 and 5,447.64

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Solution

The fourth proportional to 8,432.40, 11,635.20 and 5,447.64 is: 7,516.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,432.40 : 11,635.20 = 5,447.64 : x
  2. Step 2: Convert to fraction form
    8,432.40/11,635.20 = 5,447.64/x
  3. Step 3: Cross multiply
    8,432.40x = 11,635.20 × 5,447.64
  4. Step 4: Simplify right side
    8,432.40x = 63,384,380.93
  5. Step 5: Solve for x
    x = 63,384,380.93/8,432.40
  6. Step 6: Final answer
    x = 7,516.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.