Home / 2,971.85-4,099.35-1,909.25

Finding the Fourth Proportional to 2,971.85, 4,099.35 and 1,909.25

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Solution

The fourth proportional to 2,971.85, 4,099.35 and 1,909.25 is: 2,633.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.85 : 4,099.35 = 1,909.25 : x
  2. Step 2: Convert to fraction form
    2,971.85/4,099.35 = 1,909.25/x
  3. Step 3: Cross multiply
    2,971.85x = 4,099.35 × 1,909.25
  4. Step 4: Simplify right side
    2,971.85x = 7,826,683.99
  5. Step 5: Solve for x
    x = 7,826,683.99/2,971.85
  6. Step 6: Final answer
    x = 2,633.61

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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.