Home / 7,718.06-11,578.31-2,787.19

Finding the Fourth Proportional to 7,718.06, 11,578.31 and 2,787.19

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Solution

The fourth proportional to 7,718.06, 11,578.31 and 2,787.19 is: 4,181.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.06 : 11,578.31 = 2,787.19 : x
  2. Step 2: Convert to fraction form
    7,718.06/11,578.31 = 2,787.19/x
  3. Step 3: Cross multiply
    7,718.06x = 11,578.31 × 2,787.19
  4. Step 4: Simplify right side
    7,718.06x = 32,270,949.85
  5. Step 5: Solve for x
    x = 32,270,949.85/7,718.06
  6. Step 6: Final answer
    x = 4,181.23

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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.