Home / 2,922.88-4,031.28-1,926.56

Finding the Fourth Proportional to 2,922.88, 4,031.28 and 1,926.56

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Solution

The fourth proportional to 2,922.88, 4,031.28 and 1,926.56 is: 2,657.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,922.88 : 4,031.28 = 1,926.56 : x
  2. Step 2: Convert to fraction form
    2,922.88/4,031.28 = 1,926.56/x
  3. Step 3: Cross multiply
    2,922.88x = 4,031.28 × 1,926.56
  4. Step 4: Simplify right side
    2,922.88x = 7,766,502.80
  5. Step 5: Solve for x
    x = 7,766,502.80/2,922.88
  6. Step 6: Final answer
    x = 2,657.14

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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.