Home / 2,947.08-4,419.90-1,979.04

Finding the Fourth Proportional to 2,947.08, 4,419.90 and 1,979.04

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Solution

The fourth proportional to 2,947.08, 4,419.90 and 1,979.04 is: 2,968.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.08 : 4,419.90 = 1,979.04 : x
  2. Step 2: Convert to fraction form
    2,947.08/4,419.90 = 1,979.04/x
  3. Step 3: Cross multiply
    2,947.08x = 4,419.90 × 1,979.04
  4. Step 4: Simplify right side
    2,947.08x = 8,747,158.90
  5. Step 5: Solve for x
    x = 8,747,158.90/2,947.08
  6. Step 6: Final answer
    x = 2,968.08

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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.