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Finding the Fourth Proportional to 8,630.55, 12,938.72 and 4,471.74

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Solution

The fourth proportional to 8,630.55, 12,938.72 and 4,471.74 is: 6,703.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.55 : 12,938.72 = 4,471.74 : x
  2. Step 2: Convert to fraction form
    8,630.55/12,938.72 = 4,471.74/x
  3. Step 3: Cross multiply
    8,630.55x = 12,938.72 × 4,471.74
  4. Step 4: Simplify right side
    8,630.55x = 57,858,569.41
  5. Step 5: Solve for x
    x = 57,858,569.41/8,630.55
  6. Step 6: Final answer
    x = 6,703.93

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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.