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Finding the Fourth Proportional to 7,969.44, 10,997.31 and 4,985.13

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Solution

The fourth proportional to 7,969.44, 10,997.31 and 4,985.13 is: 6,879.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,969.44 : 10,997.31 = 4,985.13 : x
  2. Step 2: Convert to fraction form
    7,969.44/10,997.31 = 4,985.13/x
  3. Step 3: Cross multiply
    7,969.44x = 10,997.31 × 4,985.13
  4. Step 4: Simplify right side
    7,969.44x = 54,822,965.01
  5. Step 5: Solve for x
    x = 54,822,965.01/7,969.44
  6. Step 6: Final answer
    x = 6,879.15

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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.