Home / 2,073.45-3,110.34-686.73

Finding the Fourth Proportional to 2,073.45, 3,110.34 and 686.73

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Solution

The fourth proportional to 2,073.45, 3,110.34 and 686.73 is: 1,030.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,073.45 : 3,110.34 = 686.73 : x
  2. Step 2: Convert to fraction form
    2,073.45/3,110.34 = 686.73/x
  3. Step 3: Cross multiply
    2,073.45x = 3,110.34 × 686.73
  4. Step 4: Simplify right side
    2,073.45x = 2,135,963.79
  5. Step 5: Solve for x
    x = 2,135,963.79/2,073.45
  6. Step 6: Final answer
    x = 1,030.15

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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.