Home / 12,187.48-18,283.98-3,868

Finding the Fourth Proportional to 12,187.48, 18,283.98 and 3,868

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Solution

The fourth proportional to 12,187.48, 18,283.98 and 3,868 is: 5,802.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.48 : 18,283.98 = 3,868 : x
  2. Step 2: Convert to fraction form
    12,187.48/18,283.98 = 3,868/x
  3. Step 3: Cross multiply
    12,187.48x = 18,283.98 × 3,868
  4. Step 4: Simplify right side
    12,187.48x = 70,722,434.64
  5. Step 5: Solve for x
    x = 70,722,434.64/12,187.48
  6. Step 6: Final answer
    x = 5,802.88

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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.