Home / 5,072.72-7,611.28-2,151.68

Finding the Fourth Proportional to 5,072.72, 7,611.28 and 2,151.68

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Solution

The fourth proportional to 5,072.72, 7,611.28 and 2,151.68 is: 3,228.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,072.72 : 7,611.28 = 2,151.68 : x
  2. Step 2: Convert to fraction form
    5,072.72/7,611.28 = 2,151.68/x
  3. Step 3: Cross multiply
    5,072.72x = 7,611.28 × 2,151.68
  4. Step 4: Simplify right side
    5,072.72x = 16,377,038.95
  5. Step 5: Solve for x
    x = 16,377,038.95/5,072.72
  6. Step 6: Final answer
    x = 3,228.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.