Home / 1,423.18-2,136.29-808.08

Finding the Fourth Proportional to 1,423.18, 2,136.29 and 808.08

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Solution

The fourth proportional to 1,423.18, 2,136.29 and 808.08 is: 1,212.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.18 : 2,136.29 = 808.08 : x
  2. Step 2: Convert to fraction form
    1,423.18/2,136.29 = 808.08/x
  3. Step 3: Cross multiply
    1,423.18x = 2,136.29 × 808.08
  4. Step 4: Simplify right side
    1,423.18x = 1,726,293.22
  5. Step 5: Solve for x
    x = 1,726,293.22/1,423.18
  6. Step 6: Final answer
    x = 1,212.98

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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.