Home / 5,268.88-7,899.20-1,981.92

Finding the Fourth Proportional to 5,268.88, 7,899.20 and 1,981.92

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Solution

The fourth proportional to 5,268.88, 7,899.20 and 1,981.92 is: 2,971.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,268.88 : 7,899.20 = 1,981.92 : x
  2. Step 2: Convert to fraction form
    5,268.88/7,899.20 = 1,981.92/x
  3. Step 3: Cross multiply
    5,268.88x = 7,899.20 × 1,981.92
  4. Step 4: Simplify right side
    5,268.88x = 15,655,582.46
  5. Step 5: Solve for x
    x = 15,655,582.46/5,268.88
  6. Step 6: Final answer
    x = 2,971.33

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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.