Home / 2,538.74-3,807.50-2,128.07

Finding the Fourth Proportional to 2,538.74, 3,807.50 and 2,128.07

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Solution

The fourth proportional to 2,538.74, 3,807.50 and 2,128.07 is: 3,191.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,538.74 : 3,807.50 = 2,128.07 : x
  2. Step 2: Convert to fraction form
    2,538.74/3,807.50 = 2,128.07/x
  3. Step 3: Cross multiply
    2,538.74x = 3,807.50 × 2,128.07
  4. Step 4: Simplify right side
    2,538.74x = 8,102,596.85
  5. Step 5: Solve for x
    x = 8,102,596.85/2,538.74
  6. Step 6: Final answer
    x = 3,191.59

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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.