Home / 2,690.28-3,713.40-1,893.96

Finding the Fourth Proportional to 2,690.28, 3,713.40 and 1,893.96

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Solution

The fourth proportional to 2,690.28, 3,713.40 and 1,893.96 is: 2,614.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.28 : 3,713.40 = 1,893.96 : x
  2. Step 2: Convert to fraction form
    2,690.28/3,713.40 = 1,893.96/x
  3. Step 3: Cross multiply
    2,690.28x = 3,713.40 × 1,893.96
  4. Step 4: Simplify right side
    2,690.28x = 7,033,031.06
  5. Step 5: Solve for x
    x = 7,033,031.06/2,690.28
  6. Step 6: Final answer
    x = 2,614.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.