Home / 5,789.20-7,989.06-3,136.61

Finding the Fourth Proportional to 5,789.20, 7,989.06 and 3,136.61

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Solution

The fourth proportional to 5,789.20, 7,989.06 and 3,136.61 is: 4,328.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,789.20 : 7,989.06 = 3,136.61 : x
  2. Step 2: Convert to fraction form
    5,789.20/7,989.06 = 3,136.61/x
  3. Step 3: Cross multiply
    5,789.20x = 7,989.06 × 3,136.61
  4. Step 4: Simplify right side
    5,789.20x = 25,058,565.49
  5. Step 5: Solve for x
    x = 25,058,565.49/5,789.20
  6. Step 6: Final answer
    x = 4,328.50

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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.