Home / 8,159.20-12,225.60-7,381.60

Finding the Fourth Proportional to 8,159.20, 12,225.60 and 7,381.60

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Solution

The fourth proportional to 8,159.20, 12,225.60 and 7,381.60 is: 11,060.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159.20 : 12,225.60 = 7,381.60 : x
  2. Step 2: Convert to fraction form
    8,159.20/12,225.60 = 7,381.60/x
  3. Step 3: Cross multiply
    8,159.20x = 12,225.60 × 7,381.60
  4. Step 4: Simplify right side
    8,159.20x = 90,244,488.96
  5. Step 5: Solve for x
    x = 90,244,488.96/8,159.20
  6. Step 6: Final answer
    x = 11,060.46

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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.