Home / 2,959.28-4,439.40-1,420.28

Finding the Fourth Proportional to 2,959.28, 4,439.40 and 1,420.28

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Solution

The fourth proportional to 2,959.28, 4,439.40 and 1,420.28 is: 2,130.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.28 : 4,439.40 = 1,420.28 : x
  2. Step 2: Convert to fraction form
    2,959.28/4,439.40 = 1,420.28/x
  3. Step 3: Cross multiply
    2,959.28x = 4,439.40 × 1,420.28
  4. Step 4: Simplify right side
    2,959.28x = 6,305,191.03
  5. Step 5: Solve for x
    x = 6,305,191.03/2,959.28
  6. Step 6: Final answer
    x = 2,130.65

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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.