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Finding the Fourth Proportional to 2,387.57, 3,294.86 and 1,339.65

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Solution

The fourth proportional to 2,387.57, 3,294.86 and 1,339.65 is: 1,848.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.57 : 3,294.86 = 1,339.65 : x
  2. Step 2: Convert to fraction form
    2,387.57/3,294.86 = 1,339.65/x
  3. Step 3: Cross multiply
    2,387.57x = 3,294.86 × 1,339.65
  4. Step 4: Simplify right side
    2,387.57x = 4,413,959.20
  5. Step 5: Solve for x
    x = 4,413,959.20/2,387.57
  6. Step 6: Final answer
    x = 1,848.73

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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.