Home / 3,143.92-4,337.36-2,147.60

Finding the Fourth Proportional to 3,143.92, 4,337.36 and 2,147.60

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Solution

The fourth proportional to 3,143.92, 4,337.36 and 2,147.60 is: 2,962.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.92 : 4,337.36 = 2,147.60 : x
  2. Step 2: Convert to fraction form
    3,143.92/4,337.36 = 2,147.60/x
  3. Step 3: Cross multiply
    3,143.92x = 4,337.36 × 2,147.60
  4. Step 4: Simplify right side
    3,143.92x = 9,314,914.34
  5. Step 5: Solve for x
    x = 9,314,914.34/3,143.92
  6. Step 6: Final answer
    x = 2,962.83

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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.