Home / 2,787.20-3,846.48-1,545.28

Finding the Fourth Proportional to 2,787.20, 3,846.48 and 1,545.28

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Solution

The fourth proportional to 2,787.20, 3,846.48 and 1,545.28 is: 2,132.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.20 : 3,846.48 = 1,545.28 : x
  2. Step 2: Convert to fraction form
    2,787.20/3,846.48 = 1,545.28/x
  3. Step 3: Cross multiply
    2,787.20x = 3,846.48 × 1,545.28
  4. Step 4: Simplify right side
    2,787.20x = 5,943,888.61
  5. Step 5: Solve for x
    x = 5,943,888.61/2,787.20
  6. Step 6: Final answer
    x = 2,132.57

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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.