Home / 5,230.24-7,217.28-2,991.40

Finding the Fourth Proportional to 5,230.24, 7,217.28 and 2,991.40

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Solution

The fourth proportional to 5,230.24, 7,217.28 and 2,991.40 is: 4,127.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.24 : 7,217.28 = 2,991.40 : x
  2. Step 2: Convert to fraction form
    5,230.24/7,217.28 = 2,991.40/x
  3. Step 3: Cross multiply
    5,230.24x = 7,217.28 × 2,991.40
  4. Step 4: Simplify right side
    5,230.24x = 21,589,771.39
  5. Step 5: Solve for x
    x = 21,589,771.39/5,230.24
  6. Step 6: Final answer
    x = 4,127.87

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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.