Home / 2,093.10-3,140.77-861.36

Finding the Fourth Proportional to 2,093.10, 3,140.77 and 861.36

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Solution

The fourth proportional to 2,093.10, 3,140.77 and 861.36 is: 1,292.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,093.10 : 3,140.77 = 861.36 : x
  2. Step 2: Convert to fraction form
    2,093.10/3,140.77 = 861.36/x
  3. Step 3: Cross multiply
    2,093.10x = 3,140.77 × 861.36
  4. Step 4: Simplify right side
    2,093.10x = 2,705,333.65
  5. Step 5: Solve for x
    x = 2,705,333.65/2,093.10
  6. Step 6: Final answer
    x = 1,292.50

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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.