Home / 3,719.95-5,123.67-2,772.71

Finding the Fourth Proportional to 3,719.95, 5,123.67 and 2,772.71

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Solution

The fourth proportional to 3,719.95, 5,123.67 and 2,772.71 is: 3,818.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.95 : 5,123.67 = 2,772.71 : x
  2. Step 2: Convert to fraction form
    3,719.95/5,123.67 = 2,772.71/x
  3. Step 3: Cross multiply
    3,719.95x = 5,123.67 × 2,772.71
  4. Step 4: Simplify right side
    3,719.95x = 14,206,451.05
  5. Step 5: Solve for x
    x = 14,206,451.05/3,719.95
  6. Step 6: Final answer
    x = 3,818.99

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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.