Home / 2,157.87-3,240.04-1,234.47

Finding the Fourth Proportional to 2,157.87, 3,240.04 and 1,234.47

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Solution

The fourth proportional to 2,157.87, 3,240.04 and 1,234.47 is: 1,853.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.87 : 3,240.04 = 1,234.47 : x
  2. Step 2: Convert to fraction form
    2,157.87/3,240.04 = 1,234.47/x
  3. Step 3: Cross multiply
    2,157.87x = 3,240.04 × 1,234.47
  4. Step 4: Simplify right side
    2,157.87x = 3,999,732.18
  5. Step 5: Solve for x
    x = 3,999,732.18/2,157.87
  6. Step 6: Final answer
    x = 1,853.56

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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.