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Finding the Fourth Proportional to 8,672.80, 13,009.28 and 6,597.12

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Solution

The fourth proportional to 8,672.80, 13,009.28 and 6,597.12 is: 9,895.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.80 : 13,009.28 = 6,597.12 : x
  2. Step 2: Convert to fraction form
    8,672.80/13,009.28 = 6,597.12/x
  3. Step 3: Cross multiply
    8,672.80x = 13,009.28 × 6,597.12
  4. Step 4: Simplify right side
    8,672.80x = 85,823,781.27
  5. Step 5: Solve for x
    x = 85,823,781.27/8,672.80
  6. Step 6: Final answer
    x = 9,895.74

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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.