Home / 2,787.18-4,182.38-1,144.90

Finding the Fourth Proportional to 2,787.18, 4,182.38 and 1,144.90

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Solution

The fourth proportional to 2,787.18, 4,182.38 and 1,144.90 is: 1,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.18 : 4,182.38 = 1,144.90 : x
  2. Step 2: Convert to fraction form
    2,787.18/4,182.38 = 1,144.90/x
  3. Step 3: Cross multiply
    2,787.18x = 4,182.38 × 1,144.90
  4. Step 4: Simplify right side
    2,787.18x = 4,788,406.86
  5. Step 5: Solve for x
    x = 4,788,406.86/2,787.18
  6. Step 6: Final answer
    x = 1,718.01

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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.