Home / 2,666.13-3,997.48-1,107.20

Finding the Fourth Proportional to 2,666.13, 3,997.48 and 1,107.20

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Solution

The fourth proportional to 2,666.13, 3,997.48 and 1,107.20 is: 1,660.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.13 : 3,997.48 = 1,107.20 : x
  2. Step 2: Convert to fraction form
    2,666.13/3,997.48 = 1,107.20/x
  3. Step 3: Cross multiply
    2,666.13x = 3,997.48 × 1,107.20
  4. Step 4: Simplify right side
    2,666.13x = 4,426,022.50
  5. Step 5: Solve for x
    x = 4,426,022.50/2,666.13
  6. Step 6: Final answer
    x = 1,660.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.