Home / 5,680.10-8,520.15-2,915.30

Finding the Fourth Proportional to 5,680.10, 8,520.15 and 2,915.30

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Solution

The fourth proportional to 5,680.10, 8,520.15 and 2,915.30 is: 4,372.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,680.10 : 8,520.15 = 2,915.30 : x
  2. Step 2: Convert to fraction form
    5,680.10/8,520.15 = 2,915.30/x
  3. Step 3: Cross multiply
    5,680.10x = 8,520.15 × 2,915.30
  4. Step 4: Simplify right side
    5,680.10x = 24,838,793.30
  5. Step 5: Solve for x
    x = 24,838,793.30/5,680.10
  6. Step 6: Final answer
    x = 4,372.95

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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.