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Finding the Fourth Proportional to 1,859.58, 2,789.76 and 885.18

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Solution

The fourth proportional to 1,859.58, 2,789.76 and 885.18 is: 1,327.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859.58 : 2,789.76 = 885.18 : x
  2. Step 2: Convert to fraction form
    1,859.58/2,789.76 = 885.18/x
  3. Step 3: Cross multiply
    1,859.58x = 2,789.76 × 885.18
  4. Step 4: Simplify right side
    1,859.58x = 2,469,439.76
  5. Step 5: Solve for x
    x = 2,469,439.76/1,859.58
  6. Step 6: Final answer
    x = 1,327.96

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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.