Home / 1,782.11-2,673.62-686.18

Finding the Fourth Proportional to 1,782.11, 2,673.62 and 686.18

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Solution

The fourth proportional to 1,782.11, 2,673.62 and 686.18 is: 1,029.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.11 : 2,673.62 = 686.18 : x
  2. Step 2: Convert to fraction form
    1,782.11/2,673.62 = 686.18/x
  3. Step 3: Cross multiply
    1,782.11x = 2,673.62 × 686.18
  4. Step 4: Simplify right side
    1,782.11x = 1,834,594.26
  5. Step 5: Solve for x
    x = 1,834,594.26/1,782.11
  6. Step 6: Final answer
    x = 1,029.45

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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.