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Finding the Fourth Proportional to 8,718.60, 13,077.90 and 4,344.60

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Solution

The fourth proportional to 8,718.60, 13,077.90 and 4,344.60 is: 6,516.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.60 : 13,077.90 = 4,344.60 : x
  2. Step 2: Convert to fraction form
    8,718.60/13,077.90 = 4,344.60/x
  3. Step 3: Cross multiply
    8,718.60x = 13,077.90 × 4,344.60
  4. Step 4: Simplify right side
    8,718.60x = 56,818,244.34
  5. Step 5: Solve for x
    x = 56,818,244.34/8,718.60
  6. Step 6: Final answer
    x = 6,516.90

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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.