Home / 8,319.92-12,425.06-7,401.38

Finding the Fourth Proportional to 8,319.92, 12,425.06 and 7,401.38

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Solution

The fourth proportional to 8,319.92, 12,425.06 and 7,401.38 is: 11,053.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.92 : 12,425.06 = 7,401.38 : x
  2. Step 2: Convert to fraction form
    8,319.92/12,425.06 = 7,401.38/x
  3. Step 3: Cross multiply
    8,319.92x = 12,425.06 × 7,401.38
  4. Step 4: Simplify right side
    8,319.92x = 91,962,546.96
  5. Step 5: Solve for x
    x = 91,962,546.96/8,319.92
  6. Step 6: Final answer
    x = 11,053.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.