Home / 5,320.54-7,981.37-2,200.78

Finding the Fourth Proportional to 5,320.54, 7,981.37 and 2,200.78

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Solution

The fourth proportional to 5,320.54, 7,981.37 and 2,200.78 is: 3,301.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.54 : 7,981.37 = 2,200.78 : x
  2. Step 2: Convert to fraction form
    5,320.54/7,981.37 = 2,200.78/x
  3. Step 3: Cross multiply
    5,320.54x = 7,981.37 × 2,200.78
  4. Step 4: Simplify right side
    5,320.54x = 17,565,239.47
  5. Step 5: Solve for x
    x = 17,565,239.47/5,320.54
  6. Step 6: Final answer
    x = 3,301.40

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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.