Home / 8,456.78-12,686.26-2,910.98

Finding the Fourth Proportional to 8,456.78, 12,686.26 and 2,910.98

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Solution

The fourth proportional to 8,456.78, 12,686.26 and 2,910.98 is: 4,366.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.78 : 12,686.26 = 2,910.98 : x
  2. Step 2: Convert to fraction form
    8,456.78/12,686.26 = 2,910.98/x
  3. Step 3: Cross multiply
    8,456.78x = 12,686.26 × 2,910.98
  4. Step 4: Simplify right side
    8,456.78x = 36,929,449.13
  5. Step 5: Solve for x
    x = 36,929,449.13/8,456.78
  6. Step 6: Final answer
    x = 4,366.85

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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.