Home / 5,380.46-7,421.34-3,698.90

Finding the Fourth Proportional to 5,380.46, 7,421.34 and 3,698.90

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Solution

The fourth proportional to 5,380.46, 7,421.34 and 3,698.90 is: 5,101.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.46 : 7,421.34 = 3,698.90 : x
  2. Step 2: Convert to fraction form
    5,380.46/7,421.34 = 3,698.90/x
  3. Step 3: Cross multiply
    5,380.46x = 7,421.34 × 3,698.90
  4. Step 4: Simplify right side
    5,380.46x = 27,450,794.53
  5. Step 5: Solve for x
    x = 27,450,794.53/5,380.46
  6. Step 6: Final answer
    x = 5,101.94

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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.