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Finding the Fourth Proportional to 2,743.60, 4,117.04 and 2,643.20

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Solution

The fourth proportional to 2,743.60, 4,117.04 and 2,643.20 is: 3,966.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,743.60 : 4,117.04 = 2,643.20 : x
  2. Step 2: Convert to fraction form
    2,743.60/4,117.04 = 2,643.20/x
  3. Step 3: Cross multiply
    2,743.60x = 4,117.04 × 2,643.20
  4. Step 4: Simplify right side
    2,743.60x = 10,882,160.13
  5. Step 5: Solve for x
    x = 10,882,160.13/2,743.60
  6. Step 6: Final answer
    x = 3,966.38

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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.