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Finding the Fourth Proportional to 8,713.76, 12,008.40 and 6,225.44

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Solution

The fourth proportional to 8,713.76, 12,008.40 and 6,225.44 is: 8,579.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,713.76 : 12,008.40 = 6,225.44 : x
  2. Step 2: Convert to fraction form
    8,713.76/12,008.40 = 6,225.44/x
  3. Step 3: Cross multiply
    8,713.76x = 12,008.40 × 6,225.44
  4. Step 4: Simplify right side
    8,713.76x = 74,757,573.70
  5. Step 5: Solve for x
    x = 74,757,573.70/8,713.76
  6. Step 6: Final answer
    x = 8,579.26

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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.