Home / 1,111.20-1,535.40-832.56

Finding the Fourth Proportional to 1,111.20, 1,535.40 and 832.56

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Solution

The fourth proportional to 1,111.20, 1,535.40 and 832.56 is: 1,150.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111.20 : 1,535.40 = 832.56 : x
  2. Step 2: Convert to fraction form
    1,111.20/1,535.40 = 832.56/x
  3. Step 3: Cross multiply
    1,111.20x = 1,535.40 × 832.56
  4. Step 4: Simplify right side
    1,111.20x = 1,278,312.62
  5. Step 5: Solve for x
    x = 1,278,312.62/1,111.20
  6. Step 6: Final answer
    x = 1,150.39

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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.