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Finding the Fourth Proportional to 9,362.62, 12,920.30 and 5,113.66

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Solution

The fourth proportional to 9,362.62, 12,920.30 and 5,113.66 is: 7,056.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.62 : 12,920.30 = 5,113.66 : x
  2. Step 2: Convert to fraction form
    9,362.62/12,920.30 = 5,113.66/x
  3. Step 3: Cross multiply
    9,362.62x = 12,920.30 × 5,113.66
  4. Step 4: Simplify right side
    9,362.62x = 66,070,021.30
  5. Step 5: Solve for x
    x = 66,070,021.30/9,362.62
  6. Step 6: Final answer
    x = 7,056.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.