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Finding the Fourth Proportional to 7,089.80, 10,627.84 and 3,971.32

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Solution

The fourth proportional to 7,089.80, 10,627.84 and 3,971.32 is: 5,953.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,089.80 : 10,627.84 = 3,971.32 : x
  2. Step 2: Convert to fraction form
    7,089.80/10,627.84 = 3,971.32/x
  3. Step 3: Cross multiply
    7,089.80x = 10,627.84 × 3,971.32
  4. Step 4: Simplify right side
    7,089.80x = 42,206,553.55
  5. Step 5: Solve for x
    x = 42,206,553.55/7,089.80
  6. Step 6: Final answer
    x = 5,953.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.