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Finding the Fourth Proportional to 7,880.79, 11,821.19 and 4,369.14

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Solution

The fourth proportional to 7,880.79, 11,821.19 and 4,369.14 is: 6,553.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.79 : 11,821.19 = 4,369.14 : x
  2. Step 2: Convert to fraction form
    7,880.79/11,821.19 = 4,369.14/x
  3. Step 3: Cross multiply
    7,880.79x = 11,821.19 × 4,369.14
  4. Step 4: Simplify right side
    7,880.79x = 51,648,436.81
  5. Step 5: Solve for x
    x = 51,648,436.81/7,880.79
  6. Step 6: Final answer
    x = 6,553.71

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.