Home / 10,207.78-15,311.67-2,812.31

Finding the Fourth Proportional to 10,207.78, 15,311.67 and 2,812.31

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Solution

The fourth proportional to 10,207.78, 15,311.67 and 2,812.31 is: 4,218.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,207.78 : 15,311.67 = 2,812.31 : x
  2. Step 2: Convert to fraction form
    10,207.78/15,311.67 = 2,812.31/x
  3. Step 3: Cross multiply
    10,207.78x = 15,311.67 × 2,812.31
  4. Step 4: Simplify right side
    10,207.78x = 43,061,132.97
  5. Step 5: Solve for x
    x = 43,061,132.97/10,207.78
  6. Step 6: Final answer
    x = 4,218.46

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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.