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Finding the Fourth Proportional to 3,231.53, 4,459.55 and 1,905.15

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Solution

The fourth proportional to 3,231.53, 4,459.55 and 1,905.15 is: 2,629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.53 : 4,459.55 = 1,905.15 : x
  2. Step 2: Convert to fraction form
    3,231.53/4,459.55 = 1,905.15/x
  3. Step 3: Cross multiply
    3,231.53x = 4,459.55 × 1,905.15
  4. Step 4: Simplify right side
    3,231.53x = 8,496,102.16
  5. Step 5: Solve for x
    x = 8,496,102.16/3,231.53
  6. Step 6: Final answer
    x = 2,629.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.