Home / 7,278.38-10,917.56-1,806.38

Finding the Fourth Proportional to 7,278.38, 10,917.56 and 1,806.38

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Solution

The fourth proportional to 7,278.38, 10,917.56 and 1,806.38 is: 2,709.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.38 : 10,917.56 = 1,806.38 : x
  2. Step 2: Convert to fraction form
    7,278.38/10,917.56 = 1,806.38/x
  3. Step 3: Cross multiply
    7,278.38x = 10,917.56 × 1,806.38
  4. Step 4: Simplify right side
    7,278.38x = 19,721,211.96
  5. Step 5: Solve for x
    x = 19,721,211.96/7,278.38
  6. Step 6: Final answer
    x = 2,709.56

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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.