Home / 7,044.10-9,720.90-3,977.97

Finding the Fourth Proportional to 7,044.10, 9,720.90 and 3,977.97

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Solution

The fourth proportional to 7,044.10, 9,720.90 and 3,977.97 is: 5,489.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,044.10 : 9,720.90 = 3,977.97 : x
  2. Step 2: Convert to fraction form
    7,044.10/9,720.90 = 3,977.97/x
  3. Step 3: Cross multiply
    7,044.10x = 9,720.90 × 3,977.97
  4. Step 4: Simplify right side
    7,044.10x = 38,669,448.57
  5. Step 5: Solve for x
    x = 38,669,448.57/7,044.10
  6. Step 6: Final answer
    x = 5,489.62

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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.