Home / 1,375.20-1,898.64-983.52

Finding the Fourth Proportional to 1,375.20, 1,898.64 and 983.52

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Solution

The fourth proportional to 1,375.20, 1,898.64 and 983.52 is: 1,357.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375.20 : 1,898.64 = 983.52 : x
  2. Step 2: Convert to fraction form
    1,375.20/1,898.64 = 983.52/x
  3. Step 3: Cross multiply
    1,375.20x = 1,898.64 × 983.52
  4. Step 4: Simplify right side
    1,375.20x = 1,867,350.41
  5. Step 5: Solve for x
    x = 1,867,350.41/1,375.20
  6. Step 6: Final answer
    x = 1,357.88

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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.