Home / 2,628.80-3,937.54-1,240.05

Finding the Fourth Proportional to 2,628.80, 3,937.54 and 1,240.05

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Solution

The fourth proportional to 2,628.80, 3,937.54 and 1,240.05 is: 1,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.80 : 3,937.54 = 1,240.05 : x
  2. Step 2: Convert to fraction form
    2,628.80/3,937.54 = 1,240.05/x
  3. Step 3: Cross multiply
    2,628.80x = 3,937.54 × 1,240.05
  4. Step 4: Simplify right side
    2,628.80x = 4,882,744.93
  5. Step 5: Solve for x
    x = 4,882,744.93/2,628.80
  6. Step 6: Final answer
    x = 1,857.41

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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.