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Finding the Fourth Proportional to 2,863.19, 4,294.85 and 915.39

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Solution

The fourth proportional to 2,863.19, 4,294.85 and 915.39 is: 1,373.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,863.19 : 4,294.85 = 915.39 : x
  2. Step 2: Convert to fraction form
    2,863.19/4,294.85 = 915.39/x
  3. Step 3: Cross multiply
    2,863.19x = 4,294.85 × 915.39
  4. Step 4: Simplify right side
    2,863.19x = 3,931,462.74
  5. Step 5: Solve for x
    x = 3,931,462.74/2,863.19
  6. Step 6: Final answer
    x = 1,373.11

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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.