Home / 7,438.80-11,180.07-6,629.61

Finding the Fourth Proportional to 7,438.80, 11,180.07 and 6,629.61

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Solution

The fourth proportional to 7,438.80, 11,180.07 and 6,629.61 is: 9,963.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.80 : 11,180.07 = 6,629.61 : x
  2. Step 2: Convert to fraction form
    7,438.80/11,180.07 = 6,629.61/x
  3. Step 3: Cross multiply
    7,438.80x = 11,180.07 × 6,629.61
  4. Step 4: Simplify right side
    7,438.80x = 74,119,503.87
  5. Step 5: Solve for x
    x = 74,119,503.87/7,438.80
  6. Step 6: Final answer
    x = 9,963.91

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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.