Home / 2,986.56-4,123.17-1,995.12

Finding the Fourth Proportional to 2,986.56, 4,123.17 and 1,995.12

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Solution

The fourth proportional to 2,986.56, 4,123.17 and 1,995.12 is: 2,754.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.56 : 4,123.17 = 1,995.12 : x
  2. Step 2: Convert to fraction form
    2,986.56/4,123.17 = 1,995.12/x
  3. Step 3: Cross multiply
    2,986.56x = 4,123.17 × 1,995.12
  4. Step 4: Simplify right side
    2,986.56x = 8,226,218.93
  5. Step 5: Solve for x
    x = 8,226,218.93/2,986.56
  6. Step 6: Final answer
    x = 2,754.41

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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.