Home / 7,769.80-11,647.38-3,870.52

Finding the Fourth Proportional to 7,769.80, 11,647.38 and 3,870.52

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Solution

The fourth proportional to 7,769.80, 11,647.38 and 3,870.52 is: 5,802.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.80 : 11,647.38 = 3,870.52 : x
  2. Step 2: Convert to fraction form
    7,769.80/11,647.38 = 3,870.52/x
  3. Step 3: Cross multiply
    7,769.80x = 11,647.38 × 3,870.52
  4. Step 4: Simplify right side
    7,769.80x = 45,081,417.24
  5. Step 5: Solve for x
    x = 45,081,417.24/7,769.80
  6. Step 6: Final answer
    x = 5,802.13

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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.