Home / 7,207.75-10,812.31-2,278.11

Finding the Fourth Proportional to 7,207.75, 10,812.31 and 2,278.11

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Solution

The fourth proportional to 7,207.75, 10,812.31 and 2,278.11 is: 3,417.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,207.75 : 10,812.31 = 2,278.11 : x
  2. Step 2: Convert to fraction form
    7,207.75/10,812.31 = 2,278.11/x
  3. Step 3: Cross multiply
    7,207.75x = 10,812.31 × 2,278.11
  4. Step 4: Simplify right side
    7,207.75x = 24,631,666.38
  5. Step 5: Solve for x
    x = 24,631,666.38/7,207.75
  6. Step 6: Final answer
    x = 3,417.39

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1.5x scale

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.