Home / 5,261.70-7,255.98-4,002.78

Finding the Fourth Proportional to 5,261.70, 7,255.98 and 4,002.78

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Solution

The fourth proportional to 5,261.70, 7,255.98 and 4,002.78 is: 5,519.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.70 : 7,255.98 = 4,002.78 : x
  2. Step 2: Convert to fraction form
    5,261.70/7,255.98 = 4,002.78/x
  3. Step 3: Cross multiply
    5,261.70x = 7,255.98 × 4,002.78
  4. Step 4: Simplify right side
    5,261.70x = 29,044,091.62
  5. Step 5: Solve for x
    x = 29,044,091.62/5,261.70
  6. Step 6: Final answer
    x = 5,519.91

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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.