Home / 8,458.72-12,689.29-2,615.78

Finding the Fourth Proportional to 8,458.72, 12,689.29 and 2,615.78

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Solution

The fourth proportional to 8,458.72, 12,689.29 and 2,615.78 is: 3,924.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.72 : 12,689.29 = 2,615.78 : x
  2. Step 2: Convert to fraction form
    8,458.72/12,689.29 = 2,615.78/x
  3. Step 3: Cross multiply
    8,458.72x = 12,689.29 × 2,615.78
  4. Step 4: Simplify right side
    8,458.72x = 33,192,391.00
  5. Step 5: Solve for x
    x = 33,192,391.00/8,458.72
  6. Step 6: Final answer
    x = 3,924.04

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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.