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Finding the Fourth Proportional to 9,362.75, 12,920.63 and 5,113.85

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Solution

The fourth proportional to 9,362.75, 12,920.63 and 5,113.85 is: 7,057.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.75 : 12,920.63 = 5,113.85 : x
  2. Step 2: Convert to fraction form
    9,362.75/12,920.63 = 5,113.85/x
  3. Step 3: Cross multiply
    9,362.75x = 12,920.63 × 5,113.85
  4. Step 4: Simplify right side
    9,362.75x = 66,074,073.55
  5. Step 5: Solve for x
    x = 66,074,073.55/9,362.75
  6. Step 6: Final answer
    x = 7,057.13

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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.