Home / 2,983.20-4,116.78-1,656.90

Finding the Fourth Proportional to 2,983.20, 4,116.78 and 1,656.90

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Solution

The fourth proportional to 2,983.20, 4,116.78 and 1,656.90 is: 2,286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,983.20 : 4,116.78 = 1,656.90 : x
  2. Step 2: Convert to fraction form
    2,983.20/4,116.78 = 1,656.90/x
  3. Step 3: Cross multiply
    2,983.20x = 4,116.78 × 1,656.90
  4. Step 4: Simplify right side
    2,983.20x = 6,821,092.78
  5. Step 5: Solve for x
    x = 6,821,092.78/2,983.20
  6. Step 6: Final answer
    x = 2,286.50

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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.