Home / 6,915.87-9,543.57-4,231.55

Finding the Fourth Proportional to 6,915.87, 9,543.57 and 4,231.55

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Solution

The fourth proportional to 6,915.87, 9,543.57 and 4,231.55 is: 5,839.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,915.87 : 9,543.57 = 4,231.55 : x
  2. Step 2: Convert to fraction form
    6,915.87/9,543.57 = 4,231.55/x
  3. Step 3: Cross multiply
    6,915.87x = 9,543.57 × 4,231.55
  4. Step 4: Simplify right side
    6,915.87x = 40,384,093.63
  5. Step 5: Solve for x
    x = 40,384,093.63/6,915.87
  6. Step 6: Final answer
    x = 5,839.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.