Home / 8,898.12-12,280.62-5,121.21

Finding the Fourth Proportional to 8,898.12, 12,280.62 and 5,121.21

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Solution

The fourth proportional to 8,898.12, 12,280.62 and 5,121.21 is: 7,067.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.12 : 12,280.62 = 5,121.21 : x
  2. Step 2: Convert to fraction form
    8,898.12/12,280.62 = 5,121.21/x
  3. Step 3: Cross multiply
    8,898.12x = 12,280.62 × 5,121.21
  4. Step 4: Simplify right side
    8,898.12x = 62,891,633.95
  5. Step 5: Solve for x
    x = 62,891,633.95/8,898.12
  6. Step 6: Final answer
    x = 7,067.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.