Home / 3,895.70-5,376.12-2,127.30

Finding the Fourth Proportional to 3,895.70, 5,376.12 and 2,127.30

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Solution

The fourth proportional to 3,895.70, 5,376.12 and 2,127.30 is: 2,935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.70 : 5,376.12 = 2,127.30 : x
  2. Step 2: Convert to fraction form
    3,895.70/5,376.12 = 2,127.30/x
  3. Step 3: Cross multiply
    3,895.70x = 5,376.12 × 2,127.30
  4. Step 4: Simplify right side
    3,895.70x = 11,436,620.08
  5. Step 5: Solve for x
    x = 11,436,620.08/3,895.70
  6. Step 6: Final answer
    x = 2,935.70

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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.