Home / 1,424.08-1,963.20-1,003.12

Finding the Fourth Proportional to 1,424.08, 1,963.20 and 1,003.12

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Solution

The fourth proportional to 1,424.08, 1,963.20 and 1,003.12 is: 1,382.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.08 : 1,963.20 = 1,003.12 : x
  2. Step 2: Convert to fraction form
    1,424.08/1,963.20 = 1,003.12/x
  3. Step 3: Cross multiply
    1,424.08x = 1,963.20 × 1,003.12
  4. Step 4: Simplify right side
    1,424.08x = 1,969,325.18
  5. Step 5: Solve for x
    x = 1,969,325.18/1,424.08
  6. Step 6: Final answer
    x = 1,382.88

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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.