Home / 1,214.48-1,821.66-392.73

Finding the Fourth Proportional to 1,214.48, 1,821.66 and 392.73

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Solution

The fourth proportional to 1,214.48, 1,821.66 and 392.73 is: 589.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.48 : 1,821.66 = 392.73 : x
  2. Step 2: Convert to fraction form
    1,214.48/1,821.66 = 392.73/x
  3. Step 3: Cross multiply
    1,214.48x = 1,821.66 × 392.73
  4. Step 4: Simplify right side
    1,214.48x = 715,420.53
  5. Step 5: Solve for x
    x = 715,420.53/1,214.48
  6. Step 6: Final answer
    x = 589.08

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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.