Home / 5,278.76-7,915.57-2,157.52

Finding the Fourth Proportional to 5,278.76, 7,915.57 and 2,157.52

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Solution

The fourth proportional to 5,278.76, 7,915.57 and 2,157.52 is: 3,235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.76 : 7,915.57 = 2,157.52 : x
  2. Step 2: Convert to fraction form
    5,278.76/7,915.57 = 2,157.52/x
  3. Step 3: Cross multiply
    5,278.76x = 7,915.57 × 2,157.52
  4. Step 4: Simplify right side
    5,278.76x = 17,078,000.59
  5. Step 5: Solve for x
    x = 17,078,000.59/5,278.76
  6. Step 6: Final answer
    x = 3,235.23

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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.