Home / 7,821.79-11,732.69-2,631.31

Finding the Fourth Proportional to 7,821.79, 11,732.69 and 2,631.31

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Solution

The fourth proportional to 7,821.79, 11,732.69 and 2,631.31 is: 3,946.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.79 : 11,732.69 = 2,631.31 : x
  2. Step 2: Convert to fraction form
    7,821.79/11,732.69 = 2,631.31/x
  3. Step 3: Cross multiply
    7,821.79x = 11,732.69 × 2,631.31
  4. Step 4: Simplify right side
    7,821.79x = 30,872,272.70
  5. Step 5: Solve for x
    x = 30,872,272.70/7,821.79
  6. Step 6: Final answer
    x = 3,946.96

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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.