Home / 2,915.78-4,025.24-1,854.61

Finding the Fourth Proportional to 2,915.78, 4,025.24 and 1,854.61

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Solution

The fourth proportional to 2,915.78, 4,025.24 and 1,854.61 is: 2,560.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.78 : 4,025.24 = 1,854.61 : x
  2. Step 2: Convert to fraction form
    2,915.78/4,025.24 = 1,854.61/x
  3. Step 3: Cross multiply
    2,915.78x = 4,025.24 × 1,854.61
  4. Step 4: Simplify right side
    2,915.78x = 7,465,237.98
  5. Step 5: Solve for x
    x = 7,465,237.98/2,915.78
  6. Step 6: Final answer
    x = 2,560.29

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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.