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Finding the Fourth Proportional to 2,387.46, 3,579.36 and 998.82

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Solution

The fourth proportional to 2,387.46, 3,579.36 and 998.82 is: 1,497.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.46 : 3,579.36 = 998.82 : x
  2. Step 2: Convert to fraction form
    2,387.46/3,579.36 = 998.82/x
  3. Step 3: Cross multiply
    2,387.46x = 3,579.36 × 998.82
  4. Step 4: Simplify right side
    2,387.46x = 3,575,136.36
  5. Step 5: Solve for x
    x = 3,575,136.36/2,387.46
  6. Step 6: Final answer
    x = 1,497.46

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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.