Home / 3,109.11-4,663.68-1,260.26

Finding the Fourth Proportional to 3,109.11, 4,663.68 and 1,260.26

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Solution

The fourth proportional to 3,109.11, 4,663.68 and 1,260.26 is: 1,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.11 : 4,663.68 = 1,260.26 : x
  2. Step 2: Convert to fraction form
    3,109.11/4,663.68 = 1,260.26/x
  3. Step 3: Cross multiply
    3,109.11x = 4,663.68 × 1,260.26
  4. Step 4: Simplify right side
    3,109.11x = 5,877,449.36
  5. Step 5: Solve for x
    x = 5,877,449.36/3,109.11
  6. Step 6: Final answer
    x = 1,890.40

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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.