Home / 2,979.79-4,111.56-2,232.16

Finding the Fourth Proportional to 2,979.79, 4,111.56 and 2,232.16

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Solution

The fourth proportional to 2,979.79, 4,111.56 and 2,232.16 is: 3,079.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.79 : 4,111.56 = 2,232.16 : x
  2. Step 2: Convert to fraction form
    2,979.79/4,111.56 = 2,232.16/x
  3. Step 3: Cross multiply
    2,979.79x = 4,111.56 × 2,232.16
  4. Step 4: Simplify right side
    2,979.79x = 9,177,649.49
  5. Step 5: Solve for x
    x = 9,177,649.49/2,979.79
  6. Step 6: Final answer
    x = 3,079.97

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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.