Home / 1,247.33-1,722.06-1,108.95

Finding the Fourth Proportional to 1,247.33, 1,722.06 and 1,108.95

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Solution

The fourth proportional to 1,247.33, 1,722.06 and 1,108.95 is: 1,531.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.33 : 1,722.06 = 1,108.95 : x
  2. Step 2: Convert to fraction form
    1,247.33/1,722.06 = 1,108.95/x
  3. Step 3: Cross multiply
    1,247.33x = 1,722.06 × 1,108.95
  4. Step 4: Simplify right side
    1,247.33x = 1,909,678.44
  5. Step 5: Solve for x
    x = 1,909,678.44/1,247.33
  6. Step 6: Final answer
    x = 1,531.02

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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.