Home / 8,329.31-12,433.19-7,278.36

Finding the Fourth Proportional to 8,329.31, 12,433.19 and 7,278.36

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Solution

The fourth proportional to 8,329.31, 12,433.19 and 7,278.36 is: 10,864.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,329.31 : 12,433.19 = 7,278.36 : x
  2. Step 2: Convert to fraction form
    8,329.31/12,433.19 = 7,278.36/x
  3. Step 3: Cross multiply
    8,329.31x = 12,433.19 × 7,278.36
  4. Step 4: Simplify right side
    8,329.31x = 90,493,232.77
  5. Step 5: Solve for x
    x = 90,493,232.77/8,329.31
  6. Step 6: Final answer
    x = 10,864.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.