Home / 7,278.75-10,918.13-2,085.03

Finding the Fourth Proportional to 7,278.75, 10,918.13 and 2,085.03

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Solution

The fourth proportional to 7,278.75, 10,918.13 and 2,085.03 is: 3,127.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.75 : 10,918.13 = 2,085.03 : x
  2. Step 2: Convert to fraction form
    7,278.75/10,918.13 = 2,085.03/x
  3. Step 3: Cross multiply
    7,278.75x = 10,918.13 × 2,085.03
  4. Step 4: Simplify right side
    7,278.75x = 22,764,618.17
  5. Step 5: Solve for x
    x = 22,764,618.17/7,278.75
  6. Step 6: Final answer
    x = 3,127.55

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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.