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Finding the Fourth Proportional to 7,892.61, 10,882.12 and 6,395.01

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Solution

The fourth proportional to 7,892.61, 10,882.12 and 6,395.01 is: 8,817.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.61 : 10,882.12 = 6,395.01 : x
  2. Step 2: Convert to fraction form
    7,892.61/10,882.12 = 6,395.01/x
  3. Step 3: Cross multiply
    7,892.61x = 10,882.12 × 6,395.01
  4. Step 4: Simplify right side
    7,892.61x = 69,591,266.22
  5. Step 5: Solve for x
    x = 69,591,266.22/7,892.61
  6. Step 6: Final answer
    x = 8,817.27

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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.