Home / 1,112.48-1,535.21-615.13

Finding the Fourth Proportional to 1,112.48, 1,535.21 and 615.13

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Solution

The fourth proportional to 1,112.48, 1,535.21 and 615.13 is: 848.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.48 : 1,535.21 = 615.13 : x
  2. Step 2: Convert to fraction form
    1,112.48/1,535.21 = 615.13/x
  3. Step 3: Cross multiply
    1,112.48x = 1,535.21 × 615.13
  4. Step 4: Simplify right side
    1,112.48x = 944,353.73
  5. Step 5: Solve for x
    x = 944,353.73/1,112.48
  6. Step 6: Final answer
    x = 848.87

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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.