Home / 2,085.68-3,125.76-1,109.68

Finding the Fourth Proportional to 2,085.68, 3,125.76 and 1,109.68

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Solution

The fourth proportional to 2,085.68, 3,125.76 and 1,109.68 is: 1,663.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.68 : 3,125.76 = 1,109.68 : x
  2. Step 2: Convert to fraction form
    2,085.68/3,125.76 = 1,109.68/x
  3. Step 3: Cross multiply
    2,085.68x = 3,125.76 × 1,109.68
  4. Step 4: Simplify right side
    2,085.68x = 3,468,593.36
  5. Step 5: Solve for x
    x = 3,468,593.36/2,085.68
  6. Step 6: Final answer
    x = 1,663.05

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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.