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Finding the Fourth Proportional to 6,987.76, 10,473.12 and 3,285.08

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Solution

The fourth proportional to 6,987.76, 10,473.12 and 3,285.08 is: 4,923.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.76 : 10,473.12 = 3,285.08 : x
  2. Step 2: Convert to fraction form
    6,987.76/10,473.12 = 3,285.08/x
  3. Step 3: Cross multiply
    6,987.76x = 10,473.12 × 3,285.08
  4. Step 4: Simplify right side
    6,987.76x = 34,405,037.05
  5. Step 5: Solve for x
    x = 34,405,037.05/6,987.76
  6. Step 6: Final answer
    x = 4,923.61

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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.