Home / 2,021.02-3,031.80-866.50

Finding the Fourth Proportional to 2,021.02, 3,031.80 and 866.50

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Solution

The fourth proportional to 2,021.02, 3,031.80 and 866.50 is: 1,299.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.02 : 3,031.80 = 866.50 : x
  2. Step 2: Convert to fraction form
    2,021.02/3,031.80 = 866.50/x
  3. Step 3: Cross multiply
    2,021.02x = 3,031.80 × 866.50
  4. Step 4: Simplify right side
    2,021.02x = 2,627,054.70
  5. Step 5: Solve for x
    x = 2,627,054.70/2,021.02
  6. Step 6: Final answer
    x = 1,299.87

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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.