Home / 2,126.64-3,188.13-1,031.76

Finding the Fourth Proportional to 2,126.64, 3,188.13 and 1,031.76

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Solution

The fourth proportional to 2,126.64, 3,188.13 and 1,031.76 is: 1,546.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.64 : 3,188.13 = 1,031.76 : x
  2. Step 2: Convert to fraction form
    2,126.64/3,188.13 = 1,031.76/x
  3. Step 3: Cross multiply
    2,126.64x = 3,188.13 × 1,031.76
  4. Step 4: Simplify right side
    2,126.64x = 3,289,385.01
  5. Step 5: Solve for x
    x = 3,289,385.01/2,126.64
  6. Step 6: Final answer
    x = 1,546.75

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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.