Home / 3,456.80-5,187.58-1,376.90

Finding the Fourth Proportional to 3,456.80, 5,187.58 and 1,376.90

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Solution

The fourth proportional to 3,456.80, 5,187.58 and 1,376.90 is: 2,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,456.80 : 5,187.58 = 1,376.90 : x
  2. Step 2: Convert to fraction form
    3,456.80/5,187.58 = 1,376.90/x
  3. Step 3: Cross multiply
    3,456.80x = 5,187.58 × 1,376.90
  4. Step 4: Simplify right side
    3,456.80x = 7,142,778.90
  5. Step 5: Solve for x
    x = 7,142,778.90/3,456.80
  6. Step 6: Final answer
    x = 2,066.30

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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.