Home / 7,170.78-9,895.33-3,984.28

Finding the Fourth Proportional to 7,170.78, 9,895.33 and 3,984.28

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Solution

The fourth proportional to 7,170.78, 9,895.33 and 3,984.28 is: 5,498.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.78 : 9,895.33 = 3,984.28 : x
  2. Step 2: Convert to fraction form
    7,170.78/9,895.33 = 3,984.28/x
  3. Step 3: Cross multiply
    7,170.78x = 9,895.33 × 3,984.28
  4. Step 4: Simplify right side
    7,170.78x = 39,425,696.01
  5. Step 5: Solve for x
    x = 39,425,696.01/7,170.78
  6. Step 6: Final answer
    x = 5,498.10

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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.