Home / 7,815.31-10,790.17-6,974.57

Finding the Fourth Proportional to 7,815.31, 10,790.17 and 6,974.57

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Solution

The fourth proportional to 7,815.31, 10,790.17 and 6,974.57 is: 9,629.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.31 : 10,790.17 = 6,974.57 : x
  2. Step 2: Convert to fraction form
    7,815.31/10,790.17 = 6,974.57/x
  3. Step 3: Cross multiply
    7,815.31x = 10,790.17 × 6,974.57
  4. Step 4: Simplify right side
    7,815.31x = 75,256,805.52
  5. Step 5: Solve for x
    x = 75,256,805.52/7,815.31
  6. Step 6: Final answer
    x = 9,629.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.