Home / 2,979.28-4,465.20-1,881.19

Finding the Fourth Proportional to 2,979.28, 4,465.20 and 1,881.19

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Solution

The fourth proportional to 2,979.28, 4,465.20 and 1,881.19 is: 2,819.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.28 : 4,465.20 = 1,881.19 : x
  2. Step 2: Convert to fraction form
    2,979.28/4,465.20 = 1,881.19/x
  3. Step 3: Cross multiply
    2,979.28x = 4,465.20 × 1,881.19
  4. Step 4: Simplify right side
    2,979.28x = 8,399,867.26
  5. Step 5: Solve for x
    x = 8,399,867.26/2,979.28
  6. Step 6: Final answer
    x = 2,819.43

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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.