Home / 5,279.89-7,281.26-3,938.46

Finding the Fourth Proportional to 5,279.89, 7,281.26 and 3,938.46

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Solution

The fourth proportional to 5,279.89, 7,281.26 and 3,938.46 is: 5,431.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.89 : 7,281.26 = 3,938.46 : x
  2. Step 2: Convert to fraction form
    5,279.89/7,281.26 = 3,938.46/x
  3. Step 3: Cross multiply
    5,279.89x = 7,281.26 × 3,938.46
  4. Step 4: Simplify right side
    5,279.89x = 28,676,951.26
  5. Step 5: Solve for x
    x = 28,676,951.26/5,279.89
  6. Step 6: Final answer
    x = 5,431.36

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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.