Home / 3,412.85-5,119.27-947.69

Finding the Fourth Proportional to 3,412.85, 5,119.27 and 947.69

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Solution

The fourth proportional to 3,412.85, 5,119.27 and 947.69 is: 1,421.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.85 : 5,119.27 = 947.69 : x
  2. Step 2: Convert to fraction form
    3,412.85/5,119.27 = 947.69/x
  3. Step 3: Cross multiply
    3,412.85x = 5,119.27 × 947.69
  4. Step 4: Simplify right side
    3,412.85x = 4,851,453.02
  5. Step 5: Solve for x
    x = 4,851,453.02/3,412.85
  6. Step 6: Final answer
    x = 1,421.53

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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.