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Finding the Fourth Proportional to 8,463.60, 12,666.60 and 7,426.80

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Solution

The fourth proportional to 8,463.60, 12,666.60 and 7,426.80 is: 11,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,463.60 : 12,666.60 = 7,426.80 : x
  2. Step 2: Convert to fraction form
    8,463.60/12,666.60 = 7,426.80/x
  3. Step 3: Cross multiply
    8,463.60x = 12,666.60 × 7,426.80
  4. Step 4: Simplify right side
    8,463.60x = 94,072,304.88
  5. Step 5: Solve for x
    x = 94,072,304.88/8,463.60
  6. Step 6: Final answer
    x = 11,114.93

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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.