Home / 5,279.35-7,885.31-4,778.26

Finding the Fourth Proportional to 5,279.35, 7,885.31 and 4,778.26

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Solution

The fourth proportional to 5,279.35, 7,885.31 and 4,778.26 is: 7,136.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.35 : 7,885.31 = 4,778.26 : x
  2. Step 2: Convert to fraction form
    5,279.35/7,885.31 = 4,778.26/x
  3. Step 3: Cross multiply
    5,279.35x = 7,885.31 × 4,778.26
  4. Step 4: Simplify right side
    5,279.35x = 37,678,061.36
  5. Step 5: Solve for x
    x = 37,678,061.36/5,279.35
  6. Step 6: Final answer
    x = 7,136.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.