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Finding the Fourth Proportional to 7,880.94, 11,751.71 and 7,344.72

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Solution

The fourth proportional to 7,880.94, 11,751.71 and 7,344.72 is: 10,952.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.94 : 11,751.71 = 7,344.72 : x
  2. Step 2: Convert to fraction form
    7,880.94/11,751.71 = 7,344.72/x
  3. Step 3: Cross multiply
    7,880.94x = 11,751.71 × 7,344.72
  4. Step 4: Simplify right side
    7,880.94x = 86,312,982.75
  5. Step 5: Solve for x
    x = 86,312,982.75/7,880.94
  6. Step 6: Final answer
    x = 10,952.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.