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Finding the Fourth Proportional to 2,874.47, 3,966.72 and 1,695.65

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Solution

The fourth proportional to 2,874.47, 3,966.72 and 1,695.65 is: 2,339.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.47 : 3,966.72 = 1,695.65 : x
  2. Step 2: Convert to fraction form
    2,874.47/3,966.72 = 1,695.65/x
  3. Step 3: Cross multiply
    2,874.47x = 3,966.72 × 1,695.65
  4. Step 4: Simplify right side
    2,874.47x = 6,726,168.77
  5. Step 5: Solve for x
    x = 6,726,168.77/2,874.47
  6. Step 6: Final answer
    x = 2,339.97

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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.