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Finding the Fourth Proportional to 4,880.62, 7,321.86 and 1,959.16

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Solution

The fourth proportional to 4,880.62, 7,321.86 and 1,959.16 is: 2,939.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.62 : 7,321.86 = 1,959.16 : x
  2. Step 2: Convert to fraction form
    4,880.62/7,321.86 = 1,959.16/x
  3. Step 3: Cross multiply
    4,880.62x = 7,321.86 × 1,959.16
  4. Step 4: Simplify right side
    4,880.62x = 14,344,695.24
  5. Step 5: Solve for x
    x = 14,344,695.24/4,880.62
  6. Step 6: Final answer
    x = 2,939.11

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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.