Home / 1,342.11-2,013.50-1,108.72

Finding the Fourth Proportional to 1,342.11, 2,013.50 and 1,108.72

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Solution

The fourth proportional to 1,342.11, 2,013.50 and 1,108.72 is: 1,663.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.11 : 2,013.50 = 1,108.72 : x
  2. Step 2: Convert to fraction form
    1,342.11/2,013.50 = 1,108.72/x
  3. Step 3: Cross multiply
    1,342.11x = 2,013.50 × 1,108.72
  4. Step 4: Simplify right side
    1,342.11x = 2,232,407.72
  5. Step 5: Solve for x
    x = 2,232,407.72/1,342.11
  6. Step 6: Final answer
    x = 1,663.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.