Home / 1,469.19-2,202.27-920.12

Finding the Fourth Proportional to 1,469.19, 2,202.27 and 920.12

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Solution

The fourth proportional to 1,469.19, 2,202.27 and 920.12 is: 1,379.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.19 : 2,202.27 = 920.12 : x
  2. Step 2: Convert to fraction form
    1,469.19/2,202.27 = 920.12/x
  3. Step 3: Cross multiply
    1,469.19x = 2,202.27 × 920.12
  4. Step 4: Simplify right side
    1,469.19x = 2,026,352.67
  5. Step 5: Solve for x
    x = 2,026,352.67/1,469.19
  6. Step 6: Final answer
    x = 1,379.23

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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.