Home / 1,937.39-2,672.42-1,378.62

Finding the Fourth Proportional to 1,937.39, 2,672.42 and 1,378.62

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Solution

The fourth proportional to 1,937.39, 2,672.42 and 1,378.62 is: 1,901.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,937.39 : 2,672.42 = 1,378.62 : x
  2. Step 2: Convert to fraction form
    1,937.39/2,672.42 = 1,378.62/x
  3. Step 3: Cross multiply
    1,937.39x = 2,672.42 × 1,378.62
  4. Step 4: Simplify right side
    1,937.39x = 3,684,251.66
  5. Step 5: Solve for x
    x = 3,684,251.66/1,937.39
  6. Step 6: Final answer
    x = 1,901.66

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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.