Home / 5,230.80-7,217.40-2,992.10

Finding the Fourth Proportional to 5,230.80, 7,217.40 and 2,992.10

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Solution

The fourth proportional to 5,230.80, 7,217.40 and 2,992.10 is: 4,128.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.80 : 7,217.40 = 2,992.10 : x
  2. Step 2: Convert to fraction form
    5,230.80/7,217.40 = 2,992.10/x
  3. Step 3: Cross multiply
    5,230.80x = 7,217.40 × 2,992.10
  4. Step 4: Simplify right side
    5,230.80x = 21,595,182.54
  5. Step 5: Solve for x
    x = 21,595,182.54/5,230.80
  6. Step 6: Final answer
    x = 4,128.47

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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.