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Finding the Fourth Proportional to 7,907.10, 11,860.65 and 6,837.90

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Solution

The fourth proportional to 7,907.10, 11,860.65 and 6,837.90 is: 10,256.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.10 : 11,860.65 = 6,837.90 : x
  2. Step 2: Convert to fraction form
    7,907.10/11,860.65 = 6,837.90/x
  3. Step 3: Cross multiply
    7,907.10x = 11,860.65 × 6,837.90
  4. Step 4: Simplify right side
    7,907.10x = 81,101,938.64
  5. Step 5: Solve for x
    x = 81,101,938.64/7,907.10
  6. Step 6: Final answer
    x = 10,256.85

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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.