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Finding the Fourth Proportional to 2,118.09, 3,177.14 and 579.09

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Solution

The fourth proportional to 2,118.09, 3,177.14 and 579.09 is: 868.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.09 : 3,177.14 = 579.09 : x
  2. Step 2: Convert to fraction form
    2,118.09/3,177.14 = 579.09/x
  3. Step 3: Cross multiply
    2,118.09x = 3,177.14 × 579.09
  4. Step 4: Simplify right side
    2,118.09x = 1,839,862.28
  5. Step 5: Solve for x
    x = 1,839,862.28/2,118.09
  6. Step 6: Final answer
    x = 868.64

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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.