Home / 3,143.28-4,337.38-1,817.45

Finding the Fourth Proportional to 3,143.28, 4,337.38 and 1,817.45

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Solution

The fourth proportional to 3,143.28, 4,337.38 and 1,817.45 is: 2,507.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.28 : 4,337.38 = 1,817.45 : x
  2. Step 2: Convert to fraction form
    3,143.28/4,337.38 = 1,817.45/x
  3. Step 3: Cross multiply
    3,143.28x = 4,337.38 × 1,817.45
  4. Step 4: Simplify right side
    3,143.28x = 7,882,971.28
  5. Step 5: Solve for x
    x = 7,882,971.28/3,143.28
  6. Step 6: Final answer
    x = 2,507.88

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Half scale
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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.