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Finding the Fourth Proportional to 7,168.78, 9,892.89 and 4,025.02

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Solution

The fourth proportional to 7,168.78, 9,892.89 and 4,025.02 is: 5,554.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.78 : 9,892.89 = 4,025.02 : x
  2. Step 2: Convert to fraction form
    7,168.78/9,892.89 = 4,025.02/x
  3. Step 3: Cross multiply
    7,168.78x = 9,892.89 × 4,025.02
  4. Step 4: Simplify right side
    7,168.78x = 39,819,080.11
  5. Step 5: Solve for x
    x = 39,819,080.11/7,168.78
  6. Step 6: Final answer
    x = 5,554.51

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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.