Home / 2,073.90-3,110.31-686.82

Finding the Fourth Proportional to 2,073.90, 3,110.31 and 686.82

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Solution

The fourth proportional to 2,073.90, 3,110.31 and 686.82 is: 1,030.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,073.90 : 3,110.31 = 686.82 : x
  2. Step 2: Convert to fraction form
    2,073.90/3,110.31 = 686.82/x
  3. Step 3: Cross multiply
    2,073.90x = 3,110.31 × 686.82
  4. Step 4: Simplify right side
    2,073.90x = 2,136,223.11
  5. Step 5: Solve for x
    x = 2,136,223.11/2,073.90
  6. Step 6: Final answer
    x = 1,030.05

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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.