Home / 7,930.90-11,895.40-2,087.97

Finding the Fourth Proportional to 7,930.90, 11,895.40 and 2,087.97

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Solution

The fourth proportional to 7,930.90, 11,895.40 and 2,087.97 is: 3,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,930.90 : 11,895.40 = 2,087.97 : x
  2. Step 2: Convert to fraction form
    7,930.90/11,895.40 = 2,087.97/x
  3. Step 3: Cross multiply
    7,930.90x = 11,895.40 × 2,087.97
  4. Step 4: Simplify right side
    7,930.90x = 24,837,238.34
  5. Step 5: Solve for x
    x = 24,837,238.34/7,930.90
  6. Step 6: Final answer
    x = 3,131.70

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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.