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Finding the Fourth Proportional to 3,891.16, 5,837.64 and 1,293.92

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Solution

The fourth proportional to 3,891.16, 5,837.64 and 1,293.92 is: 1,941.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.16 : 5,837.64 = 1,293.92 : x
  2. Step 2: Convert to fraction form
    3,891.16/5,837.64 = 1,293.92/x
  3. Step 3: Cross multiply
    3,891.16x = 5,837.64 × 1,293.92
  4. Step 4: Simplify right side
    3,891.16x = 7,553,439.15
  5. Step 5: Solve for x
    x = 7,553,439.15/3,891.16
  6. Step 6: Final answer
    x = 1,941.18

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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.