Home / 1,407.92-1,938.68-1,112.24

Finding the Fourth Proportional to 1,407.92, 1,938.68 and 1,112.24

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Solution

The fourth proportional to 1,407.92, 1,938.68 and 1,112.24 is: 1,531.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.92 : 1,938.68 = 1,112.24 : x
  2. Step 2: Convert to fraction form
    1,407.92/1,938.68 = 1,112.24/x
  3. Step 3: Cross multiply
    1,407.92x = 1,938.68 × 1,112.24
  4. Step 4: Simplify right side
    1,407.92x = 2,156,277.44
  5. Step 5: Solve for x
    x = 2,156,277.44/1,407.92
  6. Step 6: Final answer
    x = 1,531.53

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1.5x scale

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.