Home / 7,745.42-11,618.90-2,479.11

Finding the Fourth Proportional to 7,745.42, 11,618.90 and 2,479.11

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Solution

The fourth proportional to 7,745.42, 11,618.90 and 2,479.11 is: 3,718.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,745.42 : 11,618.90 = 2,479.11 : x
  2. Step 2: Convert to fraction form
    7,745.42/11,618.90 = 2,479.11/x
  3. Step 3: Cross multiply
    7,745.42x = 11,618.90 × 2,479.11
  4. Step 4: Simplify right side
    7,745.42x = 28,804,518.78
  5. Step 5: Solve for x
    x = 28,804,518.78/7,745.42
  6. Step 6: Final answer
    x = 3,718.91

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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.