Home / 3,412.09-5,119.61-1,769.78

Finding the Fourth Proportional to 3,412.09, 5,119.61 and 1,769.78

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Solution

The fourth proportional to 3,412.09, 5,119.61 and 1,769.78 is: 2,655.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.09 : 5,119.61 = 1,769.78 : x
  2. Step 2: Convert to fraction form
    3,412.09/5,119.61 = 1,769.78/x
  3. Step 3: Cross multiply
    3,412.09x = 5,119.61 × 1,769.78
  4. Step 4: Simplify right side
    3,412.09x = 9,060,587.34
  5. Step 5: Solve for x
    x = 9,060,587.34/3,412.09
  6. Step 6: Final answer
    x = 2,655.44

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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.