Home / 1,979.28-2,959.92-1,485.96

Finding the Fourth Proportional to 1,979.28, 2,959.92 and 1,485.96

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Solution

The fourth proportional to 1,979.28, 2,959.92 and 1,485.96 is: 2,222.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.28 : 2,959.92 = 1,485.96 : x
  2. Step 2: Convert to fraction form
    1,979.28/2,959.92 = 1,485.96/x
  3. Step 3: Cross multiply
    1,979.28x = 2,959.92 × 1,485.96
  4. Step 4: Simplify right side
    1,979.28x = 4,398,322.72
  5. Step 5: Solve for x
    x = 4,398,322.72/1,979.28
  6. Step 6: Final answer
    x = 2,222.18

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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.