Home / 9,343.20-12,885.84-6,990.96

Finding the Fourth Proportional to 9,343.20, 12,885.84 and 6,990.96

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Solution

The fourth proportional to 9,343.20, 12,885.84 and 6,990.96 is: 9,641.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,343.20 : 12,885.84 = 6,990.96 : x
  2. Step 2: Convert to fraction form
    9,343.20/12,885.84 = 6,990.96/x
  3. Step 3: Cross multiply
    9,343.20x = 12,885.84 × 6,990.96
  4. Step 4: Simplify right side
    9,343.20x = 90,084,392.01
  5. Step 5: Solve for x
    x = 90,084,392.01/9,343.20
  6. Step 6: Final answer
    x = 9,641.71

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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.