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Finding the Fourth Proportional to 4,392.78, 6,581.72 and 2,657.76

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Solution

The fourth proportional to 4,392.78, 6,581.72 and 2,657.76 is: 3,982.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,392.78 : 6,581.72 = 2,657.76 : x
  2. Step 2: Convert to fraction form
    4,392.78/6,581.72 = 2,657.76/x
  3. Step 3: Cross multiply
    4,392.78x = 6,581.72 × 2,657.76
  4. Step 4: Simplify right side
    4,392.78x = 17,492,632.15
  5. Step 5: Solve for x
    x = 17,492,632.15/4,392.78
  6. Step 6: Final answer
    x = 3,982.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.