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Finding the Fourth Proportional to 5,780.72, 7,976.76 and 3,296.72

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Solution

The fourth proportional to 5,780.72, 7,976.76 and 3,296.72 is: 4,549.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.72 : 7,976.76 = 3,296.72 : x
  2. Step 2: Convert to fraction form
    5,780.72/7,976.76 = 3,296.72/x
  3. Step 3: Cross multiply
    5,780.72x = 7,976.76 × 3,296.72
  4. Step 4: Simplify right side
    5,780.72x = 26,297,144.23
  5. Step 5: Solve for x
    x = 26,297,144.23/5,780.72
  6. Step 6: Final answer
    x = 4,549.11

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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.