Home / 7,929.86-11,895.38-2,382.78

Finding the Fourth Proportional to 7,929.86, 11,895.38 and 2,382.78

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Solution

The fourth proportional to 7,929.86, 11,895.38 and 2,382.78 is: 3,574.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.86 : 11,895.38 = 2,382.78 : x
  2. Step 2: Convert to fraction form
    7,929.86/11,895.38 = 2,382.78/x
  3. Step 3: Cross multiply
    7,929.86x = 11,895.38 × 2,382.78
  4. Step 4: Simplify right side
    7,929.86x = 28,344,073.56
  5. Step 5: Solve for x
    x = 28,344,073.56/7,929.86
  6. Step 6: Final answer
    x = 3,574.35

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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.