Home / 2,021.64-3,031.38-866.76

Finding the Fourth Proportional to 2,021.64, 3,031.38 and 866.76

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Solution

The fourth proportional to 2,021.64, 3,031.38 and 866.76 is: 1,299.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.64 : 3,031.38 = 866.76 : x
  2. Step 2: Convert to fraction form
    2,021.64/3,031.38 = 866.76/x
  3. Step 3: Cross multiply
    2,021.64x = 3,031.38 × 866.76
  4. Step 4: Simplify right side
    2,021.64x = 2,627,478.93
  5. Step 5: Solve for x
    x = 2,627,478.93/2,021.64
  6. Step 6: Final answer
    x = 1,299.68

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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.