Home / 5,279.45-7,291.85-4,220.89

Finding the Fourth Proportional to 5,279.45, 7,291.85 and 4,220.89

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Solution

The fourth proportional to 5,279.45, 7,291.85 and 4,220.89 is: 5,829.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.45 : 7,291.85 = 4,220.89 : x
  2. Step 2: Convert to fraction form
    5,279.45/7,291.85 = 4,220.89/x
  3. Step 3: Cross multiply
    5,279.45x = 7,291.85 × 4,220.89
  4. Step 4: Simplify right side
    5,279.45x = 30,778,096.75
  5. Step 5: Solve for x
    x = 30,778,096.75/5,279.45
  6. Step 6: Final answer
    x = 5,829.79

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Double scale
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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.