Home / 2,915.76-3,997.49-2,863.30

Finding the Fourth Proportional to 2,915.76, 3,997.49 and 2,863.30

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Solution

The fourth proportional to 2,915.76, 3,997.49 and 2,863.30 is: 3,925.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.76 : 3,997.49 = 2,863.30 : x
  2. Step 2: Convert to fraction form
    2,915.76/3,997.49 = 2,863.30/x
  3. Step 3: Cross multiply
    2,915.76x = 3,997.49 × 2,863.30
  4. Step 4: Simplify right side
    2,915.76x = 11,446,013.12
  5. Step 5: Solve for x
    x = 11,446,013.12/2,915.76
  6. Step 6: Final answer
    x = 3,925.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.