Home / 1,213.95-1,821.87-483.60

Finding the Fourth Proportional to 1,213.95, 1,821.87 and 483.60

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Solution

The fourth proportional to 1,213.95, 1,821.87 and 483.60 is: 725.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.95 : 1,821.87 = 483.60 : x
  2. Step 2: Convert to fraction form
    1,213.95/1,821.87 = 483.60/x
  3. Step 3: Cross multiply
    1,213.95x = 1,821.87 × 483.60
  4. Step 4: Simplify right side
    1,213.95x = 881,056.33
  5. Step 5: Solve for x
    x = 881,056.33/1,213.95
  6. Step 6: Final answer
    x = 725.78

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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.