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Finding the Fourth Proportional to 7,907.92, 11,800.48 and 6,858.16

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Solution

The fourth proportional to 7,907.92, 11,800.48 and 6,858.16 is: 10,233.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.92 : 11,800.48 = 6,858.16 : x
  2. Step 2: Convert to fraction form
    7,907.92/11,800.48 = 6,858.16/x
  3. Step 3: Cross multiply
    7,907.92x = 11,800.48 × 6,858.16
  4. Step 4: Simplify right side
    7,907.92x = 80,929,579.92
  5. Step 5: Solve for x
    x = 80,929,579.92/7,907.92
  6. Step 6: Final answer
    x = 10,233.99

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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.