Home / 1,788.60-2,682.90-618.69

Finding the Fourth Proportional to 1,788.60, 2,682.90 and 618.69

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Solution

The fourth proportional to 1,788.60, 2,682.90 and 618.69 is: 928.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.60 : 2,682.90 = 618.69 : x
  2. Step 2: Convert to fraction form
    1,788.60/2,682.90 = 618.69/x
  3. Step 3: Cross multiply
    1,788.60x = 2,682.90 × 618.69
  4. Step 4: Simplify right side
    1,788.60x = 1,659,883.40
  5. Step 5: Solve for x
    x = 1,659,883.40/1,788.60
  6. Step 6: Final answer
    x = 928.04

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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.