Home / 5,171.90-7,757.87-1,276.31

Finding the Fourth Proportional to 5,171.90, 7,757.87 and 1,276.31

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Solution

The fourth proportional to 5,171.90, 7,757.87 and 1,276.31 is: 1,914.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.90 : 7,757.87 = 1,276.31 : x
  2. Step 2: Convert to fraction form
    5,171.90/7,757.87 = 1,276.31/x
  3. Step 3: Cross multiply
    5,171.90x = 7,757.87 × 1,276.31
  4. Step 4: Simplify right side
    5,171.90x = 9,901,401.89
  5. Step 5: Solve for x
    x = 9,901,401.89/5,171.90
  6. Step 6: Final answer
    x = 1,914.46

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Similar ratio
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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.