Home / 1,927.50-2,891.57-1,270.72

Finding the Fourth Proportional to 1,927.50, 2,891.57 and 1,270.72

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Solution

The fourth proportional to 1,927.50, 2,891.57 and 1,270.72 is: 1,906.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.50 : 2,891.57 = 1,270.72 : x
  2. Step 2: Convert to fraction form
    1,927.50/2,891.57 = 1,270.72/x
  3. Step 3: Cross multiply
    1,927.50x = 2,891.57 × 1,270.72
  4. Step 4: Simplify right side
    1,927.50x = 3,674,373.09
  5. Step 5: Solve for x
    x = 3,674,373.09/1,927.50
  6. Step 6: Final answer
    x = 1,906.29

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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.