Home / 2,555.28-3,833.64-823.92

Finding the Fourth Proportional to 2,555.28, 3,833.64 and 823.92

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Solution

The fourth proportional to 2,555.28, 3,833.64 and 823.92 is: 1,236.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.28 : 3,833.64 = 823.92 : x
  2. Step 2: Convert to fraction form
    2,555.28/3,833.64 = 823.92/x
  3. Step 3: Cross multiply
    2,555.28x = 3,833.64 × 823.92
  4. Step 4: Simplify right side
    2,555.28x = 3,158,612.67
  5. Step 5: Solve for x
    x = 3,158,612.67/2,555.28
  6. Step 6: Final answer
    x = 1,236.11

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1.5x scale

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.