Home / 2,909.86-4,016.60-1,790.85

Finding the Fourth Proportional to 2,909.86, 4,016.60 and 1,790.85

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Solution

The fourth proportional to 2,909.86, 4,016.60 and 1,790.85 is: 2,471.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.86 : 4,016.60 = 1,790.85 : x
  2. Step 2: Convert to fraction form
    2,909.86/4,016.60 = 1,790.85/x
  3. Step 3: Cross multiply
    2,909.86x = 4,016.60 × 1,790.85
  4. Step 4: Simplify right side
    2,909.86x = 7,193,128.11
  5. Step 5: Solve for x
    x = 7,193,128.11/2,909.86
  6. Step 6: Final answer
    x = 2,471.98

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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.