Home / 3,420.11-5,131.98-1,472.19

Finding the Fourth Proportional to 3,420.11, 5,131.98 and 1,472.19

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Solution

The fourth proportional to 3,420.11, 5,131.98 and 1,472.19 is: 2,209.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.11 : 5,131.98 = 1,472.19 : x
  2. Step 2: Convert to fraction form
    3,420.11/5,131.98 = 1,472.19/x
  3. Step 3: Cross multiply
    3,420.11x = 5,131.98 × 1,472.19
  4. Step 4: Simplify right side
    3,420.11x = 7,555,249.64
  5. Step 5: Solve for x
    x = 7,555,249.64/3,420.11
  6. Step 6: Final answer
    x = 2,209.07

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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.