Home / 4,115.58-5,680.31-3,119.12

Finding the Fourth Proportional to 4,115.58, 5,680.31 and 3,119.12

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Solution

The fourth proportional to 4,115.58, 5,680.31 and 3,119.12 is: 4,305.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,115.58 : 5,680.31 = 3,119.12 : x
  2. Step 2: Convert to fraction form
    4,115.58/5,680.31 = 3,119.12/x
  3. Step 3: Cross multiply
    4,115.58x = 5,680.31 × 3,119.12
  4. Step 4: Simplify right side
    4,115.58x = 17,717,568.53
  5. Step 5: Solve for x
    x = 17,717,568.53/4,115.58
  6. Step 6: Final answer
    x = 4,305.00

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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.