Home / 1,324.20-1,827.40-800.13

Finding the Fourth Proportional to 1,324.20, 1,827.40 and 800.13

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Solution

The fourth proportional to 1,324.20, 1,827.40 and 800.13 is: 1,104.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.20 : 1,827.40 = 800.13 : x
  2. Step 2: Convert to fraction form
    1,324.20/1,827.40 = 800.13/x
  3. Step 3: Cross multiply
    1,324.20x = 1,827.40 × 800.13
  4. Step 4: Simplify right side
    1,324.20x = 1,462,157.56
  5. Step 5: Solve for x
    x = 1,462,157.56/1,324.20
  6. Step 6: Final answer
    x = 1,104.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.