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Finding the Fourth Proportional to 8,666.68, 13,000.80 and 2,426.76

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Solution

The fourth proportional to 8,666.68, 13,000.80 and 2,426.76 is: 3,640.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.68 : 13,000.80 = 2,426.76 : x
  2. Step 2: Convert to fraction form
    8,666.68/13,000.80 = 2,426.76/x
  3. Step 3: Cross multiply
    8,666.68x = 13,000.80 × 2,426.76
  4. Step 4: Simplify right side
    8,666.68x = 31,549,821.41
  5. Step 5: Solve for x
    x = 31,549,821.41/8,666.68
  6. Step 6: Final answer
    x = 3,640.36

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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.