Home / 1,138.12-1,563.08-1,006.96

Finding the Fourth Proportional to 1,138.12, 1,563.08 and 1,006.96

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Solution

The fourth proportional to 1,138.12, 1,563.08 and 1,006.96 is: 1,382.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138.12 : 1,563.08 = 1,006.96 : x
  2. Step 2: Convert to fraction form
    1,138.12/1,563.08 = 1,006.96/x
  3. Step 3: Cross multiply
    1,138.12x = 1,563.08 × 1,006.96
  4. Step 4: Simplify right side
    1,138.12x = 1,573,959.04
  5. Step 5: Solve for x
    x = 1,573,959.04/1,138.12
  6. Step 6: Final answer
    x = 1,382.95

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.