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Finding the Fourth Proportional to 9,992.31, 13,791.40 and 5,746.34

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Solution

The fourth proportional to 9,992.31, 13,791.40 and 5,746.34 is: 7,931.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.31 : 13,791.40 = 5,746.34 : x
  2. Step 2: Convert to fraction form
    9,992.31/13,791.40 = 5,746.34/x
  3. Step 3: Cross multiply
    9,992.31x = 13,791.40 × 5,746.34
  4. Step 4: Simplify right side
    9,992.31x = 79,250,087.84
  5. Step 5: Solve for x
    x = 79,250,087.84/9,992.31
  6. Step 6: Final answer
    x = 7,931.11

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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.