Home / 3,872.12-5,808.78-1,563.56

Finding the Fourth Proportional to 3,872.12, 5,808.78 and 1,563.56

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Solution

The fourth proportional to 3,872.12, 5,808.78 and 1,563.56 is: 2,345.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.12 : 5,808.78 = 1,563.56 : x
  2. Step 2: Convert to fraction form
    3,872.12/5,808.78 = 1,563.56/x
  3. Step 3: Cross multiply
    3,872.12x = 5,808.78 × 1,563.56
  4. Step 4: Simplify right side
    3,872.12x = 9,082,376.06
  5. Step 5: Solve for x
    x = 9,082,376.06/3,872.12
  6. Step 6: Final answer
    x = 2,345.58

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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.