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Finding the Fourth Proportional to 7,170.32, 9,893.94 and 4,025.90

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Solution

The fourth proportional to 7,170.32, 9,893.94 and 4,025.90 is: 5,555.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.32 : 9,893.94 = 4,025.90 : x
  2. Step 2: Convert to fraction form
    7,170.32/9,893.94 = 4,025.90/x
  3. Step 3: Cross multiply
    7,170.32x = 9,893.94 × 4,025.90
  4. Step 4: Simplify right side
    7,170.32x = 39,832,013.05
  5. Step 5: Solve for x
    x = 39,832,013.05/7,170.32
  6. Step 6: Final answer
    x = 5,555.12

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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.