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Finding the Fourth Proportional to 7,892.08, 10,891.14 and 4,355.56

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Solution

The fourth proportional to 7,892.08, 10,891.14 and 4,355.56 is: 6,010.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.08 : 10,891.14 = 4,355.56 : x
  2. Step 2: Convert to fraction form
    7,892.08/10,891.14 = 4,355.56/x
  3. Step 3: Cross multiply
    7,892.08x = 10,891.14 × 4,355.56
  4. Step 4: Simplify right side
    7,892.08x = 47,437,013.74
  5. Step 5: Solve for x
    x = 47,437,013.74/7,892.08
  6. Step 6: Final answer
    x = 6,010.71

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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.