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Finding the Fourth Proportional to 6,992.72, 9,663.75 and 5,731.74

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Solution

The fourth proportional to 6,992.72, 9,663.75 and 5,731.74 is: 7,921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,992.72 : 9,663.75 = 5,731.74 : x
  2. Step 2: Convert to fraction form
    6,992.72/9,663.75 = 5,731.74/x
  3. Step 3: Cross multiply
    6,992.72x = 9,663.75 × 5,731.74
  4. Step 4: Simplify right side
    6,992.72x = 55,390,102.43
  5. Step 5: Solve for x
    x = 55,390,102.43/6,992.72
  6. Step 6: Final answer
    x = 7,921.12

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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.