Home / 2,939.92-4,056.88-2,240.08

Finding the Fourth Proportional to 2,939.92, 4,056.88 and 2,240.08

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Solution

The fourth proportional to 2,939.92, 4,056.88 and 2,240.08 is: 3,091.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.92 : 4,056.88 = 2,240.08 : x
  2. Step 2: Convert to fraction form
    2,939.92/4,056.88 = 2,240.08/x
  3. Step 3: Cross multiply
    2,939.92x = 4,056.88 × 2,240.08
  4. Step 4: Simplify right side
    2,939.92x = 9,087,735.75
  5. Step 5: Solve for x
    x = 9,087,735.75/2,939.92
  6. Step 6: Final answer
    x = 3,091.15

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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.