Home / 2,148.23-3,218.08-1,415.59

Finding the Fourth Proportional to 2,148.23, 3,218.08 and 1,415.59

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Solution

The fourth proportional to 2,148.23, 3,218.08 and 1,415.59 is: 2,120.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.23 : 3,218.08 = 1,415.59 : x
  2. Step 2: Convert to fraction form
    2,148.23/3,218.08 = 1,415.59/x
  3. Step 3: Cross multiply
    2,148.23x = 3,218.08 × 1,415.59
  4. Step 4: Simplify right side
    2,148.23x = 4,555,458.70
  5. Step 5: Solve for x
    x = 4,555,458.70/2,148.23
  6. Step 6: Final answer
    x = 2,120.56

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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.