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Finding the Fourth Proportional to 7,851.06, 10,832.13 and 7,102.62

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Solution

The fourth proportional to 7,851.06, 10,832.13 and 7,102.62 is: 9,799.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.06 : 10,832.13 = 7,102.62 : x
  2. Step 2: Convert to fraction form
    7,851.06/10,832.13 = 7,102.62/x
  3. Step 3: Cross multiply
    7,851.06x = 10,832.13 × 7,102.62
  4. Step 4: Simplify right side
    7,851.06x = 76,936,503.18
  5. Step 5: Solve for x
    x = 76,936,503.18/7,851.06
  6. Step 6: Final answer
    x = 9,799.51

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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.