Home / 3,123.45-4,311.09-2,061.41

Finding the Fourth Proportional to 3,123.45, 4,311.09 and 2,061.41

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Solution

The fourth proportional to 3,123.45, 4,311.09 and 2,061.41 is: 2,845.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.45 : 4,311.09 = 2,061.41 : x
  2. Step 2: Convert to fraction form
    3,123.45/4,311.09 = 2,061.41/x
  3. Step 3: Cross multiply
    3,123.45x = 4,311.09 × 2,061.41
  4. Step 4: Simplify right side
    3,123.45x = 8,886,902.48
  5. Step 5: Solve for x
    x = 8,886,902.48/3,123.45
  6. Step 6: Final answer
    x = 2,845.22

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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.