Home / 5,143.74-7,098.34-2,785.88

Finding the Fourth Proportional to 5,143.74, 7,098.34 and 2,785.88

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Solution

The fourth proportional to 5,143.74, 7,098.34 and 2,785.88 is: 3,844.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.74 : 7,098.34 = 2,785.88 : x
  2. Step 2: Convert to fraction form
    5,143.74/7,098.34 = 2,785.88/x
  3. Step 3: Cross multiply
    5,143.74x = 7,098.34 × 2,785.88
  4. Step 4: Simplify right side
    5,143.74x = 19,775,123.44
  5. Step 5: Solve for x
    x = 19,775,123.44/5,143.74
  6. Step 6: Final answer
    x = 3,844.50

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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.