Home / 3,143.62-4,338.16-1,817.32

Finding the Fourth Proportional to 3,143.62, 4,338.16 and 1,817.32

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Solution

The fourth proportional to 3,143.62, 4,338.16 and 1,817.32 is: 2,507.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.62 : 4,338.16 = 1,817.32 : x
  2. Step 2: Convert to fraction form
    3,143.62/4,338.16 = 1,817.32/x
  3. Step 3: Cross multiply
    3,143.62x = 4,338.16 × 1,817.32
  4. Step 4: Simplify right side
    3,143.62x = 7,883,824.93
  5. Step 5: Solve for x
    x = 7,883,824.93/3,143.62
  6. Step 6: Final answer
    x = 2,507.88

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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.