Home / 2,391.64-3,586.12-747.72

Finding the Fourth Proportional to 2,391.64, 3,586.12 and 747.72

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Solution

The fourth proportional to 2,391.64, 3,586.12 and 747.72 is: 1,121.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.64 : 3,586.12 = 747.72 : x
  2. Step 2: Convert to fraction form
    2,391.64/3,586.12 = 747.72/x
  3. Step 3: Cross multiply
    2,391.64x = 3,586.12 × 747.72
  4. Step 4: Simplify right side
    2,391.64x = 2,681,413.65
  5. Step 5: Solve for x
    x = 2,681,413.65/2,391.64
  6. Step 6: Final answer
    x = 1,121.16

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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.