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Finding the Fourth Proportional to 1,867.18, 2,800.74 and 634.58

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Solution

The fourth proportional to 1,867.18, 2,800.74 and 634.58 is: 951.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.18 : 2,800.74 = 634.58 : x
  2. Step 2: Convert to fraction form
    1,867.18/2,800.74 = 634.58/x
  3. Step 3: Cross multiply
    1,867.18x = 2,800.74 × 634.58
  4. Step 4: Simplify right side
    1,867.18x = 1,777,293.59
  5. Step 5: Solve for x
    x = 1,777,293.59/1,867.18
  6. Step 6: Final answer
    x = 951.86

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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.