Home / 5,143.92-7,718.69-2,181.91

Finding the Fourth Proportional to 5,143.92, 7,718.69 and 2,181.91

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Solution

The fourth proportional to 5,143.92, 7,718.69 and 2,181.91 is: 3,274.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.92 : 7,718.69 = 2,181.91 : x
  2. Step 2: Convert to fraction form
    5,143.92/7,718.69 = 2,181.91/x
  3. Step 3: Cross multiply
    5,143.92x = 7,718.69 × 2,181.91
  4. Step 4: Simplify right side
    5,143.92x = 16,841,473.06
  5. Step 5: Solve for x
    x = 16,841,473.06/5,143.92
  6. Step 6: Final answer
    x = 3,274.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.