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Finding the Fourth Proportional to 1,874.93, 2,815.72 and 1,779.21

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Solution

The fourth proportional to 1,874.93, 2,815.72 and 1,779.21 is: 2,671.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.93 : 2,815.72 = 1,779.21 : x
  2. Step 2: Convert to fraction form
    1,874.93/2,815.72 = 1,779.21/x
  3. Step 3: Cross multiply
    1,874.93x = 2,815.72 × 1,779.21
  4. Step 4: Simplify right side
    1,874.93x = 5,009,752.73
  5. Step 5: Solve for x
    x = 5,009,752.73/1,874.93
  6. Step 6: Final answer
    x = 2,671.98

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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.