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Finding the Fourth Proportional to 2,854.60, 4,281.90 and 2,635.90

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Solution

The fourth proportional to 2,854.60, 4,281.90 and 2,635.90 is: 3,953.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.60 : 4,281.90 = 2,635.90 : x
  2. Step 2: Convert to fraction form
    2,854.60/4,281.90 = 2,635.90/x
  3. Step 3: Cross multiply
    2,854.60x = 4,281.90 × 2,635.90
  4. Step 4: Simplify right side
    2,854.60x = 11,286,660.21
  5. Step 5: Solve for x
    x = 11,286,660.21/2,854.60
  6. Step 6: Final answer
    x = 3,953.85

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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.