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Finding the Fourth Proportional to 8,641.26, 12,959.28 and 2,399.76

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Solution

The fourth proportional to 8,641.26, 12,959.28 and 2,399.76 is: 3,598.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.26 : 12,959.28 = 2,399.76 : x
  2. Step 2: Convert to fraction form
    8,641.26/12,959.28 = 2,399.76/x
  3. Step 3: Cross multiply
    8,641.26x = 12,959.28 × 2,399.76
  4. Step 4: Simplify right side
    8,641.26x = 31,099,161.77
  5. Step 5: Solve for x
    x = 31,099,161.77/8,641.26
  6. Step 6: Final answer
    x = 3,598.92

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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.