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Finding the Fourth Proportional to 8,417.79, 12,627.19 and 3,487.81

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Solution

The fourth proportional to 8,417.79, 12,627.19 and 3,487.81 is: 5,231.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,417.79 : 12,627.19 = 3,487.81 : x
  2. Step 2: Convert to fraction form
    8,417.79/12,627.19 = 3,487.81/x
  3. Step 3: Cross multiply
    8,417.79x = 12,627.19 × 3,487.81
  4. Step 4: Simplify right side
    8,417.79x = 44,041,239.55
  5. Step 5: Solve for x
    x = 44,041,239.55/8,417.79
  6. Step 6: Final answer
    x = 5,231.92

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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.