Home / 7,829.80-11,749.38-2,902.90

Finding the Fourth Proportional to 7,829.80, 11,749.38 and 2,902.90

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Solution

The fourth proportional to 7,829.80, 11,749.38 and 2,902.90 is: 4,356.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,829.80 : 11,749.38 = 2,902.90 : x
  2. Step 2: Convert to fraction form
    7,829.80/11,749.38 = 2,902.90/x
  3. Step 3: Cross multiply
    7,829.80x = 11,749.38 × 2,902.90
  4. Step 4: Simplify right side
    7,829.80x = 34,107,275.20
  5. Step 5: Solve for x
    x = 34,107,275.20/7,829.80
  6. Step 6: Final answer
    x = 4,356.09

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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.