Home / 8,518.80-12,781.85-2,969.13

Finding the Fourth Proportional to 8,518.80, 12,781.85 and 2,969.13

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Solution

The fourth proportional to 8,518.80, 12,781.85 and 2,969.13 is: 4,454.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.80 : 12,781.85 = 2,969.13 : x
  2. Step 2: Convert to fraction form
    8,518.80/12,781.85 = 2,969.13/x
  3. Step 3: Cross multiply
    8,518.80x = 12,781.85 × 2,969.13
  4. Step 4: Simplify right side
    8,518.80x = 37,950,959.44
  5. Step 5: Solve for x
    x = 37,950,959.44/8,518.80
  6. Step 6: Final answer
    x = 4,454.97

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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.