Home / 2,869.68-3,960.82-1,873.20

Finding the Fourth Proportional to 2,869.68, 3,960.82 and 1,873.20

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Solution

The fourth proportional to 2,869.68, 3,960.82 and 1,873.20 is: 2,585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.68 : 3,960.82 = 1,873.20 : x
  2. Step 2: Convert to fraction form
    2,869.68/3,960.82 = 1,873.20/x
  3. Step 3: Cross multiply
    2,869.68x = 3,960.82 × 1,873.20
  4. Step 4: Simplify right side
    2,869.68x = 7,419,408.02
  5. Step 5: Solve for x
    x = 7,419,408.02/2,869.68
  6. Step 6: Final answer
    x = 2,585.45

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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.