Home / 2,919.08-4,027.38-1,985.96

Finding the Fourth Proportional to 2,919.08, 4,027.38 and 1,985.96

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Solution

The fourth proportional to 2,919.08, 4,027.38 and 1,985.96 is: 2,739.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.08 : 4,027.38 = 1,985.96 : x
  2. Step 2: Convert to fraction form
    2,919.08/4,027.38 = 1,985.96/x
  3. Step 3: Cross multiply
    2,919.08x = 4,027.38 × 1,985.96
  4. Step 4: Simplify right side
    2,919.08x = 7,998,215.58
  5. Step 5: Solve for x
    x = 7,998,215.58/2,919.08
  6. Step 6: Final answer
    x = 2,739.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.