Home / 5,390.44-7,438.39-3,374.75

Finding the Fourth Proportional to 5,390.44, 7,438.39 and 3,374.75

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Solution

The fourth proportional to 5,390.44, 7,438.39 and 3,374.75 is: 4,656.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.44 : 7,438.39 = 3,374.75 : x
  2. Step 2: Convert to fraction form
    5,390.44/7,438.39 = 3,374.75/x
  3. Step 3: Cross multiply
    5,390.44x = 7,438.39 × 3,374.75
  4. Step 4: Simplify right side
    5,390.44x = 25,102,706.65
  5. Step 5: Solve for x
    x = 25,102,706.65/5,390.44
  6. Step 6: Final answer
    x = 4,656.89

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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.