Home / 2,515.76-3,775.36-1,538.88

Finding the Fourth Proportional to 2,515.76, 3,775.36 and 1,538.88

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Solution

The fourth proportional to 2,515.76, 3,775.36 and 1,538.88 is: 2,309.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.76 : 3,775.36 = 1,538.88 : x
  2. Step 2: Convert to fraction form
    2,515.76/3,775.36 = 1,538.88/x
  3. Step 3: Cross multiply
    2,515.76x = 3,775.36 × 1,538.88
  4. Step 4: Simplify right side
    2,515.76x = 5,809,826.00
  5. Step 5: Solve for x
    x = 5,809,826.00/2,515.76
  6. Step 6: Final answer
    x = 2,309.37

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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.