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Finding the Fourth Proportional to 4,479.12, 6,719.40 and 1,882.20

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Solution

The fourth proportional to 4,479.12, 6,719.40 and 1,882.20 is: 2,823.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.12 : 6,719.40 = 1,882.20 : x
  2. Step 2: Convert to fraction form
    4,479.12/6,719.40 = 1,882.20/x
  3. Step 3: Cross multiply
    4,479.12x = 6,719.40 × 1,882.20
  4. Step 4: Simplify right side
    4,479.12x = 12,647,254.68
  5. Step 5: Solve for x
    x = 12,647,254.68/4,479.12
  6. Step 6: Final answer
    x = 2,823.60

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1.5x scale

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.