Home / 2,983.80-4,122.93-2,147.28

Finding the Fourth Proportional to 2,983.80, 4,122.93 and 2,147.28

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Solution

The fourth proportional to 2,983.80, 4,122.93 and 2,147.28 is: 2,967.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,983.80 : 4,122.93 = 2,147.28 : x
  2. Step 2: Convert to fraction form
    2,983.80/4,122.93 = 2,147.28/x
  3. Step 3: Cross multiply
    2,983.80x = 4,122.93 × 2,147.28
  4. Step 4: Simplify right side
    2,983.80x = 8,853,077.72
  5. Step 5: Solve for x
    x = 8,853,077.72/2,983.80
  6. Step 6: Final answer
    x = 2,967.04

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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.