Home / 2,091.12-3,135.88-1,116.68

Finding the Fourth Proportional to 2,091.12, 3,135.88 and 1,116.68

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Solution

The fourth proportional to 2,091.12, 3,135.88 and 1,116.68 is: 1,674.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.12 : 3,135.88 = 1,116.68 : x
  2. Step 2: Convert to fraction form
    2,091.12/3,135.88 = 1,116.68/x
  3. Step 3: Cross multiply
    2,091.12x = 3,135.88 × 1,116.68
  4. Step 4: Simplify right side
    2,091.12x = 3,501,774.48
  5. Step 5: Solve for x
    x = 3,501,774.48/2,091.12
  6. Step 6: Final answer
    x = 1,674.59

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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.