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Finding the Fourth Proportional to 7,892.42, 10,891.61 and 4,307.41

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Solution

The fourth proportional to 7,892.42, 10,891.61 and 4,307.41 is: 5,944.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.42 : 10,891.61 = 4,307.41 : x
  2. Step 2: Convert to fraction form
    7,892.42/10,891.61 = 4,307.41/x
  3. Step 3: Cross multiply
    7,892.42x = 10,891.61 × 4,307.41
  4. Step 4: Simplify right side
    7,892.42x = 46,914,553.84
  5. Step 5: Solve for x
    x = 46,914,553.84/7,892.42
  6. Step 6: Final answer
    x = 5,944.25

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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.