Home / 4,087.91-6,131.75-1,314.56

Finding the Fourth Proportional to 4,087.91, 6,131.75 and 1,314.56

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Solution

The fourth proportional to 4,087.91, 6,131.75 and 1,314.56 is: 1,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.91 : 6,131.75 = 1,314.56 : x
  2. Step 2: Convert to fraction form
    4,087.91/6,131.75 = 1,314.56/x
  3. Step 3: Cross multiply
    4,087.91x = 6,131.75 × 1,314.56
  4. Step 4: Simplify right side
    4,087.91x = 8,060,553.28
  5. Step 5: Solve for x
    x = 8,060,553.28/4,087.91
  6. Step 6: Final answer
    x = 1,971.80

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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.