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Finding the Fourth Proportional to 4,479.60, 6,719.40 and 2,843.40

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Solution

The fourth proportional to 4,479.60, 6,719.40 and 2,843.40 is: 4,265.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.60 : 6,719.40 = 2,843.40 : x
  2. Step 2: Convert to fraction form
    4,479.60/6,719.40 = 2,843.40/x
  3. Step 3: Cross multiply
    4,479.60x = 6,719.40 × 2,843.40
  4. Step 4: Simplify right side
    4,479.60x = 19,105,941.96
  5. Step 5: Solve for x
    x = 19,105,941.96/4,479.60
  6. Step 6: Final answer
    x = 4,265.10

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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.