Home / 5,286.20-7,280.16-5,171.41

Finding the Fourth Proportional to 5,286.20, 7,280.16 and 5,171.41

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Solution

The fourth proportional to 5,286.20, 7,280.16 and 5,171.41 is: 7,122.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.20 : 7,280.16 = 5,171.41 : x
  2. Step 2: Convert to fraction form
    5,286.20/7,280.16 = 5,171.41/x
  3. Step 3: Cross multiply
    5,286.20x = 7,280.16 × 5,171.41
  4. Step 4: Simplify right side
    5,286.20x = 37,648,655.82
  5. Step 5: Solve for x
    x = 37,648,655.82/5,286.20
  6. Step 6: Final answer
    x = 7,122.06

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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.