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Finding the Fourth Proportional to 2,863.96, 4,293.84 and 915.04

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Solution

The fourth proportional to 2,863.96, 4,293.84 and 915.04 is: 1,371.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,863.96 : 4,293.84 = 915.04 : x
  2. Step 2: Convert to fraction form
    2,863.96/4,293.84 = 915.04/x
  3. Step 3: Cross multiply
    2,863.96x = 4,293.84 × 915.04
  4. Step 4: Simplify right side
    2,863.96x = 3,929,035.35
  5. Step 5: Solve for x
    x = 3,929,035.35/2,863.96
  6. Step 6: Final answer
    x = 1,371.89

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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.