Home / 1,538.98-2,310.89-1,215.79

Finding the Fourth Proportional to 1,538.98, 2,310.89 and 1,215.79

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Solution

The fourth proportional to 1,538.98, 2,310.89 and 1,215.79 is: 1,825.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.98 : 2,310.89 = 1,215.79 : x
  2. Step 2: Convert to fraction form
    1,538.98/2,310.89 = 1,215.79/x
  3. Step 3: Cross multiply
    1,538.98x = 2,310.89 × 1,215.79
  4. Step 4: Simplify right side
    1,538.98x = 2,809,556.95
  5. Step 5: Solve for x
    x = 2,809,556.95/1,538.98
  6. Step 6: Final answer
    x = 1,825.60

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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.