Home / 8,157.20-12,237.92-3,158.07

Finding the Fourth Proportional to 8,157.20, 12,237.92 and 3,158.07

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Solution

The fourth proportional to 8,157.20, 12,237.92 and 3,158.07 is: 4,737.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.20 : 12,237.92 = 3,158.07 : x
  2. Step 2: Convert to fraction form
    8,157.20/12,237.92 = 3,158.07/x
  3. Step 3: Cross multiply
    8,157.20x = 12,237.92 × 3,158.07
  4. Step 4: Simplify right side
    8,157.20x = 38,648,192.22
  5. Step 5: Solve for x
    x = 38,648,192.22/8,157.20
  6. Step 6: Final answer
    x = 4,737.93

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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.