Home / 8,845.20-12,199.92-6,120.72

Finding the Fourth Proportional to 8,845.20, 12,199.92 and 6,120.72

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Solution

The fourth proportional to 8,845.20, 12,199.92 and 6,120.72 is: 8,442.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,845.20 : 12,199.92 = 6,120.72 : x
  2. Step 2: Convert to fraction form
    8,845.20/12,199.92 = 6,120.72/x
  3. Step 3: Cross multiply
    8,845.20x = 12,199.92 × 6,120.72
  4. Step 4: Simplify right side
    8,845.20x = 74,672,294.34
  5. Step 5: Solve for x
    x = 74,672,294.34/8,845.20
  6. Step 6: Final answer
    x = 8,442.13

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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.