Home / 5,143.62-7,098.20-2,785.76

Finding the Fourth Proportional to 5,143.62, 7,098.20 and 2,785.76

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Solution

The fourth proportional to 5,143.62, 7,098.20 and 2,785.76 is: 3,844.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.62 : 7,098.20 = 2,785.76 : x
  2. Step 2: Convert to fraction form
    5,143.62/7,098.20 = 2,785.76/x
  3. Step 3: Cross multiply
    5,143.62x = 7,098.20 × 2,785.76
  4. Step 4: Simplify right side
    5,143.62x = 19,773,832.21
  5. Step 5: Solve for x
    x = 19,773,832.21/5,143.62
  6. Step 6: Final answer
    x = 3,844.34

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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.