Home / 1,997.61-2,756.68-1,158.29

Finding the Fourth Proportional to 1,997.61, 2,756.68 and 1,158.29

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Solution

The fourth proportional to 1,997.61, 2,756.68 and 1,158.29 is: 1,598.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.61 : 2,756.68 = 1,158.29 : x
  2. Step 2: Convert to fraction form
    1,997.61/2,756.68 = 1,158.29/x
  3. Step 3: Cross multiply
    1,997.61x = 2,756.68 × 1,158.29
  4. Step 4: Simplify right side
    1,997.61x = 3,193,028.54
  5. Step 5: Solve for x
    x = 3,193,028.54/1,997.61
  6. Step 6: Final answer
    x = 1,598.43

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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.