Home / 5,211.49-7,192.26-2,972.85

Finding the Fourth Proportional to 5,211.49, 7,192.26 and 2,972.85

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Solution

The fourth proportional to 5,211.49, 7,192.26 and 2,972.85 is: 4,102.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.49 : 7,192.26 = 2,972.85 : x
  2. Step 2: Convert to fraction form
    5,211.49/7,192.26 = 2,972.85/x
  3. Step 3: Cross multiply
    5,211.49x = 7,192.26 × 2,972.85
  4. Step 4: Simplify right side
    5,211.49x = 21,381,474.18
  5. Step 5: Solve for x
    x = 21,381,474.18/5,211.49
  6. Step 6: Final answer
    x = 4,102.76

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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.