Home / 1,224.30-1,833.29-812.15

Finding the Fourth Proportional to 1,224.30, 1,833.29 and 812.15

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Solution

The fourth proportional to 1,224.30, 1,833.29 and 812.15 is: 1,216.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.30 : 1,833.29 = 812.15 : x
  2. Step 2: Convert to fraction form
    1,224.30/1,833.29 = 812.15/x
  3. Step 3: Cross multiply
    1,224.30x = 1,833.29 × 812.15
  4. Step 4: Simplify right side
    1,224.30x = 1,488,893.25
  5. Step 5: Solve for x
    x = 1,488,893.25/1,224.30
  6. Step 6: Final answer
    x = 1,216.12

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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.