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Finding the Fourth Proportional to 2,959.33, 4,439.69 and 879.35

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Solution

The fourth proportional to 2,959.33, 4,439.69 and 879.35 is: 1,319.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.33 : 4,439.69 = 879.35 : x
  2. Step 2: Convert to fraction form
    2,959.33/4,439.69 = 879.35/x
  3. Step 3: Cross multiply
    2,959.33x = 4,439.69 × 879.35
  4. Step 4: Simplify right side
    2,959.33x = 3,904,055.80
  5. Step 5: Solve for x
    x = 3,904,055.80/2,959.33
  6. Step 6: Final answer
    x = 1,319.24

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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.