Home / 2,081.07-3,117.96-1,855.08

Finding the Fourth Proportional to 2,081.07, 3,117.96 and 1,855.08

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Solution

The fourth proportional to 2,081.07, 3,117.96 and 1,855.08 is: 2,779.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.07 : 3,117.96 = 1,855.08 : x
  2. Step 2: Convert to fraction form
    2,081.07/3,117.96 = 1,855.08/x
  3. Step 3: Cross multiply
    2,081.07x = 3,117.96 × 1,855.08
  4. Step 4: Simplify right side
    2,081.07x = 5,784,065.24
  5. Step 5: Solve for x
    x = 5,784,065.24/2,081.07
  6. Step 6: Final answer
    x = 2,779.37

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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.