Home / 2,031.26-3,043.40-989.86

Finding the Fourth Proportional to 2,031.26, 3,043.40 and 989.86

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Solution

The fourth proportional to 2,031.26, 3,043.40 and 989.86 is: 1,483.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.26 : 3,043.40 = 989.86 : x
  2. Step 2: Convert to fraction form
    2,031.26/3,043.40 = 989.86/x
  3. Step 3: Cross multiply
    2,031.26x = 3,043.40 × 989.86
  4. Step 4: Simplify right side
    2,031.26x = 3,012,539.92
  5. Step 5: Solve for x
    x = 3,012,539.92/2,031.26
  6. Step 6: Final answer
    x = 1,483.09

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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.