Home / 3,143.43-4,336.35-2,148.75

Finding the Fourth Proportional to 3,143.43, 4,336.35 and 2,148.75

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Solution

The fourth proportional to 3,143.43, 4,336.35 and 2,148.75 is: 2,964.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.43 : 4,336.35 = 2,148.75 : x
  2. Step 2: Convert to fraction form
    3,143.43/4,336.35 = 2,148.75/x
  3. Step 3: Cross multiply
    3,143.43x = 4,336.35 × 2,148.75
  4. Step 4: Simplify right side
    3,143.43x = 9,317,732.06
  5. Step 5: Solve for x
    x = 9,317,732.06/3,143.43
  6. Step 6: Final answer
    x = 2,964.19

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Half scale
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Double 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.