Home / 1,226.40-1,839.60-577.88

Finding the Fourth Proportional to 1,226.40, 1,839.60 and 577.88

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Solution

The fourth proportional to 1,226.40, 1,839.60 and 577.88 is: 866.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.40 : 1,839.60 = 577.88 : x
  2. Step 2: Convert to fraction form
    1,226.40/1,839.60 = 577.88/x
  3. Step 3: Cross multiply
    1,226.40x = 1,839.60 × 577.88
  4. Step 4: Simplify right side
    1,226.40x = 1,063,068.05
  5. Step 5: Solve for x
    x = 1,063,068.05/1,226.40
  6. Step 6: Final answer
    x = 866.82

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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.