Home / 2,558.60-3,837.91-915.05

Finding the Fourth Proportional to 2,558.60, 3,837.91 and 915.05

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Solution

The fourth proportional to 2,558.60, 3,837.91 and 915.05 is: 1,372.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,558.60 : 3,837.91 = 915.05 : x
  2. Step 2: Convert to fraction form
    2,558.60/3,837.91 = 915.05/x
  3. Step 3: Cross multiply
    2,558.60x = 3,837.91 × 915.05
  4. Step 4: Simplify right side
    2,558.60x = 3,511,874.97
  5. Step 5: Solve for x
    x = 3,511,874.97/2,558.60
  6. Step 6: Final answer
    x = 1,372.58

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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.