Home / 3,143.78-4,337.68-1,817.24

Finding the Fourth Proportional to 3,143.78, 4,337.68 and 1,817.24

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Solution

The fourth proportional to 3,143.78, 4,337.68 and 1,817.24 is: 2,507.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.78 : 4,337.68 = 1,817.24 : x
  2. Step 2: Convert to fraction form
    3,143.78/4,337.68 = 1,817.24/x
  3. Step 3: Cross multiply
    3,143.78x = 4,337.68 × 1,817.24
  4. Step 4: Simplify right side
    3,143.78x = 7,882,605.60
  5. Step 5: Solve for x
    x = 7,882,605.60/3,143.78
  6. Step 6: Final answer
    x = 2,507.37

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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.