Home / 7,885.20-11,827.80-1,962.12

Finding the Fourth Proportional to 7,885.20, 11,827.80 and 1,962.12

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Solution

The fourth proportional to 7,885.20, 11,827.80 and 1,962.12 is: 2,943.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.20 : 11,827.80 = 1,962.12 : x
  2. Step 2: Convert to fraction form
    7,885.20/11,827.80 = 1,962.12/x
  3. Step 3: Cross multiply
    7,885.20x = 11,827.80 × 1,962.12
  4. Step 4: Simplify right side
    7,885.20x = 23,207,562.94
  5. Step 5: Solve for x
    x = 23,207,562.94/7,885.20
  6. Step 6: Final answer
    x = 2,943.18

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Similar ratio
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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.