Home / 6,915.12-10,375.26-4,143.76

Finding the Fourth Proportional to 6,915.12, 10,375.26 and 4,143.76

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Solution

The fourth proportional to 6,915.12, 10,375.26 and 4,143.76 is: 6,217.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,915.12 : 10,375.26 = 4,143.76 : x
  2. Step 2: Convert to fraction form
    6,915.12/10,375.26 = 4,143.76/x
  3. Step 3: Cross multiply
    6,915.12x = 10,375.26 × 4,143.76
  4. Step 4: Simplify right side
    6,915.12x = 42,992,587.38
  5. Step 5: Solve for x
    x = 42,992,587.38/6,915.12
  6. Step 6: Final answer
    x = 6,217.19

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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.