Home / 1,214.40-1,821.60-483.97

Finding the Fourth Proportional to 1,214.40, 1,821.60 and 483.97

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Solution

The fourth proportional to 1,214.40, 1,821.60 and 483.97 is: 725.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.40 : 1,821.60 = 483.97 : x
  2. Step 2: Convert to fraction form
    1,214.40/1,821.60 = 483.97/x
  3. Step 3: Cross multiply
    1,214.40x = 1,821.60 × 483.97
  4. Step 4: Simplify right side
    1,214.40x = 881,599.75
  5. Step 5: Solve for x
    x = 881,599.75/1,214.40
  6. Step 6: Final answer
    x = 725.96

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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.