Home / 2,984.28-4,114.90-2,142.28

Finding the Fourth Proportional to 2,984.28, 4,114.90 and 2,142.28

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Solution

The fourth proportional to 2,984.28, 4,114.90 and 2,142.28 is: 2,953.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,984.28 : 4,114.90 = 2,142.28 : x
  2. Step 2: Convert to fraction form
    2,984.28/4,114.90 = 2,142.28/x
  3. Step 3: Cross multiply
    2,984.28x = 4,114.90 × 2,142.28
  4. Step 4: Simplify right side
    2,984.28x = 8,815,267.97
  5. Step 5: Solve for x
    x = 8,815,267.97/2,984.28
  6. Step 6: Final answer
    x = 2,953.90

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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.