Home / 2,439.72-3,368.52-1,879.20

Finding the Fourth Proportional to 2,439.72, 3,368.52 and 1,879.20

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Solution

The fourth proportional to 2,439.72, 3,368.52 and 1,879.20 is: 2,594.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.72 : 3,368.52 = 1,879.20 : x
  2. Step 2: Convert to fraction form
    2,439.72/3,368.52 = 1,879.20/x
  3. Step 3: Cross multiply
    2,439.72x = 3,368.52 × 1,879.20
  4. Step 4: Simplify right side
    2,439.72x = 6,330,122.78
  5. Step 5: Solve for x
    x = 6,330,122.78/2,439.72
  6. Step 6: Final answer
    x = 2,594.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.