Home / 2,148.53-3,217.31-1,415.88

Finding the Fourth Proportional to 2,148.53, 3,217.31 and 1,415.88

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Solution

The fourth proportional to 2,148.53, 3,217.31 and 1,415.88 is: 2,120.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.53 : 3,217.31 = 1,415.88 : x
  2. Step 2: Convert to fraction form
    2,148.53/3,217.31 = 1,415.88/x
  3. Step 3: Cross multiply
    2,148.53x = 3,217.31 × 1,415.88
  4. Step 4: Simplify right side
    2,148.53x = 4,555,323.11
  5. Step 5: Solve for x
    x = 4,555,323.11/2,148.53
  6. Step 6: Final answer
    x = 2,120.21

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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.