Home / 3,979.44-5,490.75-2,407.50

Finding the Fourth Proportional to 3,979.44, 5,490.75 and 2,407.50

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Solution

The fourth proportional to 3,979.44, 5,490.75 and 2,407.50 is: 3,321.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.44 : 5,490.75 = 2,407.50 : x
  2. Step 2: Convert to fraction form
    3,979.44/5,490.75 = 2,407.50/x
  3. Step 3: Cross multiply
    3,979.44x = 5,490.75 × 2,407.50
  4. Step 4: Simplify right side
    3,979.44x = 13,218,980.63
  5. Step 5: Solve for x
    x = 13,218,980.63/3,979.44
  6. Step 6: Final answer
    x = 3,321.82

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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.