Home / 3,456.81-4,770.50-2,112.64

Finding the Fourth Proportional to 3,456.81, 4,770.50 and 2,112.64

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Solution

The fourth proportional to 3,456.81, 4,770.50 and 2,112.64 is: 2,915.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,456.81 : 4,770.50 = 2,112.64 : x
  2. Step 2: Convert to fraction form
    3,456.81/4,770.50 = 2,112.64/x
  3. Step 3: Cross multiply
    3,456.81x = 4,770.50 × 2,112.64
  4. Step 4: Simplify right side
    3,456.81x = 10,078,349.12
  5. Step 5: Solve for x
    x = 10,078,349.12/3,456.81
  6. Step 6: Final answer
    x = 2,915.51

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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.