Home / 5,422.15-7,486.81-4,161.21

Finding the Fourth Proportional to 5,422.15, 7,486.81 and 4,161.21

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Solution

The fourth proportional to 5,422.15, 7,486.81 and 4,161.21 is: 5,745.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.15 : 7,486.81 = 4,161.21 : x
  2. Step 2: Convert to fraction form
    5,422.15/7,486.81 = 4,161.21/x
  3. Step 3: Cross multiply
    5,422.15x = 7,486.81 × 4,161.21
  4. Step 4: Simplify right side
    5,422.15x = 31,154,196.38
  5. Step 5: Solve for x
    x = 31,154,196.38/5,422.15
  6. Step 6: Final answer
    x = 5,745.72

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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.