Home / 7,128.96-10,692-1,934.88

Finding the Fourth Proportional to 7,128.96, 10,692 and 1,934.88

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Solution

The fourth proportional to 7,128.96, 10,692 and 1,934.88 is: 2,901.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.96 : 10,692 = 1,934.88 : x
  2. Step 2: Convert to fraction form
    7,128.96/10,692 = 1,934.88/x
  3. Step 3: Cross multiply
    7,128.96x = 10,692 × 1,934.88
  4. Step 4: Simplify right side
    7,128.96x = 20,687,736.96
  5. Step 5: Solve for x
    x = 20,687,736.96/7,128.96
  6. Step 6: Final answer
    x = 2,901.93

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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.