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Finding the Fourth Proportional to 7,907.65, 10,912.48 and 4,370.78

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Solution

The fourth proportional to 7,907.65, 10,912.48 and 4,370.78 is: 6,031.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.65 : 10,912.48 = 4,370.78 : x
  2. Step 2: Convert to fraction form
    7,907.65/10,912.48 = 4,370.78/x
  3. Step 3: Cross multiply
    7,907.65x = 10,912.48 × 4,370.78
  4. Step 4: Simplify right side
    7,907.65x = 47,696,049.33
  5. Step 5: Solve for x
    x = 47,696,049.33/7,907.65
  6. Step 6: Final answer
    x = 6,031.63

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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.