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Finding the Fourth Proportional to 6,459.48, 9,690.84 and 2,076.84

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Solution

The fourth proportional to 6,459.48, 9,690.84 and 2,076.84 is: 3,115.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,459.48 : 9,690.84 = 2,076.84 : x
  2. Step 2: Convert to fraction form
    6,459.48/9,690.84 = 2,076.84/x
  3. Step 3: Cross multiply
    6,459.48x = 9,690.84 × 2,076.84
  4. Step 4: Simplify right side
    6,459.48x = 20,126,324.15
  5. Step 5: Solve for x
    x = 20,126,324.15/6,459.48
  6. Step 6: Final answer
    x = 3,115.78

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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.