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Finding the Fourth Proportional to 3,891.15, 5,837.13 and 1,294.11

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Solution

The fourth proportional to 3,891.15, 5,837.13 and 1,294.11 is: 1,941.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.15 : 5,837.13 = 1,294.11 : x
  2. Step 2: Convert to fraction form
    3,891.15/5,837.13 = 1,294.11/x
  3. Step 3: Cross multiply
    3,891.15x = 5,837.13 × 1,294.11
  4. Step 4: Simplify right side
    3,891.15x = 7,553,888.30
  5. Step 5: Solve for x
    x = 7,553,888.30/3,891.15
  6. Step 6: Final answer
    x = 1,941.30

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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.