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Finding the Fourth Proportional to 1,426.36, 2,136.06 and 808.19

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Solution

The fourth proportional to 1,426.36, 2,136.06 and 808.19 is: 1,210.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.36 : 2,136.06 = 808.19 : x
  2. Step 2: Convert to fraction form
    1,426.36/2,136.06 = 808.19/x
  3. Step 3: Cross multiply
    1,426.36x = 2,136.06 × 808.19
  4. Step 4: Simplify right side
    1,426.36x = 1,726,342.33
  5. Step 5: Solve for x
    x = 1,726,342.33/1,426.36
  6. Step 6: Final answer
    x = 1,210.31

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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.