Home / 4,087.11-6,131.25-1,312.85

Finding the Fourth Proportional to 4,087.11, 6,131.25 and 1,312.85

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Solution

The fourth proportional to 4,087.11, 6,131.25 and 1,312.85 is: 1,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.11 : 6,131.25 = 1,312.85 : x
  2. Step 2: Convert to fraction form
    4,087.11/6,131.25 = 1,312.85/x
  3. Step 3: Cross multiply
    4,087.11x = 6,131.25 × 1,312.85
  4. Step 4: Simplify right side
    4,087.11x = 8,049,436.67
  5. Step 5: Solve for x
    x = 8,049,436.67/4,087.11
  6. Step 6: Final answer
    x = 1,969.47

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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.