Home / 2,899.20-3,997.12-1,966.08

Finding the Fourth Proportional to 2,899.20, 3,997.12 and 1,966.08

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Solution

The fourth proportional to 2,899.20, 3,997.12 and 1,966.08 is: 2,710.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.20 : 3,997.12 = 1,966.08 : x
  2. Step 2: Convert to fraction form
    2,899.20/3,997.12 = 1,966.08/x
  3. Step 3: Cross multiply
    2,899.20x = 3,997.12 × 1,966.08
  4. Step 4: Simplify right side
    2,899.20x = 7,858,657.69
  5. Step 5: Solve for x
    x = 7,858,657.69/2,899.20
  6. Step 6: Final answer
    x = 2,710.63

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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.