Home / 8,660.36-12,990.90-3,726.62

Finding the Fourth Proportional to 8,660.36, 12,990.90 and 3,726.62

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Solution

The fourth proportional to 8,660.36, 12,990.90 and 3,726.62 is: 5,590.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.36 : 12,990.90 = 3,726.62 : x
  2. Step 2: Convert to fraction form
    8,660.36/12,990.90 = 3,726.62/x
  3. Step 3: Cross multiply
    8,660.36x = 12,990.90 × 3,726.62
  4. Step 4: Simplify right side
    8,660.36x = 48,412,147.76
  5. Step 5: Solve for x
    x = 48,412,147.76/8,660.36
  6. Step 6: Final answer
    x = 5,590.08

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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.