Home / 1,927.16-2,889.92-1,311.02

Finding the Fourth Proportional to 1,927.16, 2,889.92 and 1,311.02

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Solution

The fourth proportional to 1,927.16, 2,889.92 and 1,311.02 is: 1,965.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.16 : 2,889.92 = 1,311.02 : x
  2. Step 2: Convert to fraction form
    1,927.16/2,889.92 = 1,311.02/x
  3. Step 3: Cross multiply
    1,927.16x = 2,889.92 × 1,311.02
  4. Step 4: Simplify right side
    1,927.16x = 3,788,721.91
  5. Step 5: Solve for x
    x = 3,788,721.91/1,927.16
  6. Step 6: Final answer
    x = 1,965.97

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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.