Home / 5,105.73-7,659.51-1,985.46

Finding the Fourth Proportional to 5,105.73, 7,659.51 and 1,985.46

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Solution

The fourth proportional to 5,105.73, 7,659.51 and 1,985.46 is: 2,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.73 : 7,659.51 = 1,985.46 : x
  2. Step 2: Convert to fraction form
    5,105.73/7,659.51 = 1,985.46/x
  3. Step 3: Cross multiply
    5,105.73x = 7,659.51 × 1,985.46
  4. Step 4: Simplify right side
    5,105.73x = 15,207,668.81
  5. Step 5: Solve for x
    x = 15,207,668.81/5,105.73
  6. Step 6: Final answer
    x = 2,978.55

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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.