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Finding the Fourth Proportional to 6,878.88, 10,334.40 and 6,505.92

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Solution

The fourth proportional to 6,878.88, 10,334.40 and 6,505.92 is: 9,774.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,878.88 : 10,334.40 = 6,505.92 : x
  2. Step 2: Convert to fraction form
    6,878.88/10,334.40 = 6,505.92/x
  3. Step 3: Cross multiply
    6,878.88x = 10,334.40 × 6,505.92
  4. Step 4: Simplify right side
    6,878.88x = 67,234,779.65
  5. Step 5: Solve for x
    x = 67,234,779.65/6,878.88
  6. Step 6: Final answer
    x = 9,774.09

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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.