Home / 9,376.45-12,939.42-5,343.78

Finding the Fourth Proportional to 9,376.45, 12,939.42 and 5,343.78

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Solution

The fourth proportional to 9,376.45, 12,939.42 and 5,343.78 is: 7,374.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,376.45 : 12,939.42 = 5,343.78 : x
  2. Step 2: Convert to fraction form
    9,376.45/12,939.42 = 5,343.78/x
  3. Step 3: Cross multiply
    9,376.45x = 12,939.42 × 5,343.78
  4. Step 4: Simplify right side
    9,376.45x = 69,145,413.81
  5. Step 5: Solve for x
    x = 69,145,413.81/9,376.45
  6. Step 6: Final answer
    x = 7,374.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.