Home / 5,487.90-7,571.41-3,218.14

Finding the Fourth Proportional to 5,487.90, 7,571.41 and 3,218.14

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Solution

The fourth proportional to 5,487.90, 7,571.41 and 3,218.14 is: 4,439.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.90 : 7,571.41 = 3,218.14 : x
  2. Step 2: Convert to fraction form
    5,487.90/7,571.41 = 3,218.14/x
  3. Step 3: Cross multiply
    5,487.90x = 7,571.41 × 3,218.14
  4. Step 4: Simplify right side
    5,487.90x = 24,365,857.38
  5. Step 5: Solve for x
    x = 24,365,857.38/5,487.90
  6. Step 6: Final answer
    x = 4,439.92

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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.