Home / 2,081.15-2,872.59-1,231.19

Finding the Fourth Proportional to 2,081.15, 2,872.59 and 1,231.19

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Solution

The fourth proportional to 2,081.15, 2,872.59 and 1,231.19 is: 1,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.15 : 2,872.59 = 1,231.19 : x
  2. Step 2: Convert to fraction form
    2,081.15/2,872.59 = 1,231.19/x
  3. Step 3: Cross multiply
    2,081.15x = 2,872.59 × 1,231.19
  4. Step 4: Simplify right side
    2,081.15x = 3,536,704.08
  5. Step 5: Solve for x
    x = 3,536,704.08/2,081.15
  6. Step 6: Final answer
    x = 1,699.40

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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.