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Finding the Fourth Proportional to 7,872.93, 10,865.30 and 4,336.79

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Solution

The fourth proportional to 7,872.93, 10,865.30 and 4,336.79 is: 5,985.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.93 : 10,865.30 = 4,336.79 : x
  2. Step 2: Convert to fraction form
    7,872.93/10,865.30 = 4,336.79/x
  3. Step 3: Cross multiply
    7,872.93x = 10,865.30 × 4,336.79
  4. Step 4: Simplify right side
    7,872.93x = 47,120,448.38
  5. Step 5: Solve for x
    x = 47,120,448.38/7,872.93
  6. Step 6: Final answer
    x = 5,985.12

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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.