Home / 5,320.41-7,978.55-2,200.92

Finding the Fourth Proportional to 5,320.41, 7,978.55 and 2,200.92

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Solution

The fourth proportional to 5,320.41, 7,978.55 and 2,200.92 is: 3,300.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.41 : 7,978.55 = 2,200.92 : x
  2. Step 2: Convert to fraction form
    5,320.41/7,978.55 = 2,200.92/x
  3. Step 3: Cross multiply
    5,320.41x = 7,978.55 × 2,200.92
  4. Step 4: Simplify right side
    5,320.41x = 17,560,139.26
  5. Step 5: Solve for x
    x = 17,560,139.26/5,320.41
  6. Step 6: Final answer
    x = 3,300.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.