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Finding the Fourth Proportional to 4,880.76, 7,321.38 and 1,418.04

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Solution

The fourth proportional to 4,880.76, 7,321.38 and 1,418.04 is: 2,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.76 : 7,321.38 = 1,418.04 : x
  2. Step 2: Convert to fraction form
    4,880.76/7,321.38 = 1,418.04/x
  3. Step 3: Cross multiply
    4,880.76x = 7,321.38 × 1,418.04
  4. Step 4: Simplify right side
    4,880.76x = 10,382,009.70
  5. Step 5: Solve for x
    x = 10,382,009.70/4,880.76
  6. Step 6: Final answer
    x = 2,127.13

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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.