Home / 7,769.76-11,656.56-3,386.08

Finding the Fourth Proportional to 7,769.76, 11,656.56 and 3,386.08

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Solution

The fourth proportional to 7,769.76, 11,656.56 and 3,386.08 is: 5,079.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.76 : 11,656.56 = 3,386.08 : x
  2. Step 2: Convert to fraction form
    7,769.76/11,656.56 = 3,386.08/x
  3. Step 3: Cross multiply
    7,769.76x = 11,656.56 × 3,386.08
  4. Step 4: Simplify right side
    7,769.76x = 39,470,044.68
  5. Step 5: Solve for x
    x = 39,470,044.68/7,769.76
  6. Step 6: Final answer
    x = 5,079.96

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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.