Home / 3,143.11-4,338.97-1,816.56

Finding the Fourth Proportional to 3,143.11, 4,338.97 and 1,816.56

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Solution

The fourth proportional to 3,143.11, 4,338.97 and 1,816.56 is: 2,507.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.11 : 4,338.97 = 1,816.56 : x
  2. Step 2: Convert to fraction form
    3,143.11/4,338.97 = 1,816.56/x
  3. Step 3: Cross multiply
    3,143.11x = 4,338.97 × 1,816.56
  4. Step 4: Simplify right side
    3,143.11x = 7,881,978.53
  5. Step 5: Solve for x
    x = 7,881,978.53/3,143.11
  6. Step 6: Final answer
    x = 2,507.70

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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.