Home / 2,813.51-4,215.93-1,081.19

Finding the Fourth Proportional to 2,813.51, 4,215.93 and 1,081.19

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Solution

The fourth proportional to 2,813.51, 4,215.93 and 1,081.19 is: 1,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.51 : 4,215.93 = 1,081.19 : x
  2. Step 2: Convert to fraction form
    2,813.51/4,215.93 = 1,081.19/x
  3. Step 3: Cross multiply
    2,813.51x = 4,215.93 × 1,081.19
  4. Step 4: Simplify right side
    2,813.51x = 4,558,200.28
  5. Step 5: Solve for x
    x = 4,558,200.28/2,813.51
  6. Step 6: Final answer
    x = 1,620.11

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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.