Home / 7,044.13-9,720.78-3,900.37

Finding the Fourth Proportional to 7,044.13, 9,720.78 and 3,900.37

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Solution

The fourth proportional to 7,044.13, 9,720.78 and 3,900.37 is: 5,382.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,044.13 : 9,720.78 = 3,900.37 : x
  2. Step 2: Convert to fraction form
    7,044.13/9,720.78 = 3,900.37/x
  3. Step 3: Cross multiply
    7,044.13x = 9,720.78 × 3,900.37
  4. Step 4: Simplify right side
    7,044.13x = 37,914,638.69
  5. Step 5: Solve for x
    x = 37,914,638.69/7,044.13
  6. Step 6: Final answer
    x = 5,382.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.