Home / 3,109.39-4,665.29-1,161.13

Finding the Fourth Proportional to 3,109.39, 4,665.29 and 1,161.13

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Solution

The fourth proportional to 3,109.39, 4,665.29 and 1,161.13 is: 1,742.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.39 : 4,665.29 = 1,161.13 : x
  2. Step 2: Convert to fraction form
    3,109.39/4,665.29 = 1,161.13/x
  3. Step 3: Cross multiply
    3,109.39x = 4,665.29 × 1,161.13
  4. Step 4: Simplify right side
    3,109.39x = 5,417,008.18
  5. Step 5: Solve for x
    x = 5,417,008.18/3,109.39
  6. Step 6: Final answer
    x = 1,742.14

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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.