Home / 5,921.42-8,161.90-5,438.66

Finding the Fourth Proportional to 5,921.42, 8,161.90 and 5,438.66

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Solution

The fourth proportional to 5,921.42, 8,161.90 and 5,438.66 is: 7,496.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.42 : 8,161.90 = 5,438.66 : x
  2. Step 2: Convert to fraction form
    5,921.42/8,161.90 = 5,438.66/x
  3. Step 3: Cross multiply
    5,921.42x = 8,161.90 × 5,438.66
  4. Step 4: Simplify right side
    5,921.42x = 44,389,744.65
  5. Step 5: Solve for x
    x = 44,389,744.65/5,921.42
  6. Step 6: Final answer
    x = 7,496.48

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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.