Home / 3,119.51-4,678.66-1,171.33

Finding the Fourth Proportional to 3,119.51, 4,678.66 and 1,171.33

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Solution

The fourth proportional to 3,119.51, 4,678.66 and 1,171.33 is: 1,756.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.51 : 4,678.66 = 1,171.33 : x
  2. Step 2: Convert to fraction form
    3,119.51/4,678.66 = 1,171.33/x
  3. Step 3: Cross multiply
    3,119.51x = 4,678.66 × 1,171.33
  4. Step 4: Simplify right side
    3,119.51x = 5,480,254.82
  5. Step 5: Solve for x
    x = 5,480,254.82/3,119.51
  6. Step 6: Final answer
    x = 1,756.77

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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.