Home / 2,127.50-3,185.81-1,930.22

Finding the Fourth Proportional to 2,127.50, 3,185.81 and 1,930.22

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Solution

The fourth proportional to 2,127.50, 3,185.81 and 1,930.22 is: 2,890.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.50 : 3,185.81 = 1,930.22 : x
  2. Step 2: Convert to fraction form
    2,127.50/3,185.81 = 1,930.22/x
  3. Step 3: Cross multiply
    2,127.50x = 3,185.81 × 1,930.22
  4. Step 4: Simplify right side
    2,127.50x = 6,149,314.18
  5. Step 5: Solve for x
    x = 6,149,314.18/2,127.50
  6. Step 6: Final answer
    x = 2,890.39

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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.