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Finding the Fourth Proportional to 2,779.44, 4,169.52 and 929.76

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Solution

The fourth proportional to 2,779.44, 4,169.52 and 929.76 is: 1,394.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.44 : 4,169.52 = 929.76 : x
  2. Step 2: Convert to fraction form
    2,779.44/4,169.52 = 929.76/x
  3. Step 3: Cross multiply
    2,779.44x = 4,169.52 × 929.76
  4. Step 4: Simplify right side
    2,779.44x = 3,876,652.92
  5. Step 5: Solve for x
    x = 3,876,652.92/2,779.44
  6. Step 6: Final answer
    x = 1,394.76

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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.