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Finding the Fourth Proportional to 1,860.92, 2,789.96 and 627.58

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Solution

The fourth proportional to 1,860.92, 2,789.96 and 627.58 is: 940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.92 : 2,789.96 = 627.58 : x
  2. Step 2: Convert to fraction form
    1,860.92/2,789.96 = 627.58/x
  3. Step 3: Cross multiply
    1,860.92x = 2,789.96 × 627.58
  4. Step 4: Simplify right side
    1,860.92x = 1,750,923.10
  5. Step 5: Solve for x
    x = 1,750,923.10/1,860.92
  6. Step 6: Final answer
    x = 940.89

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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.