Home / 6,613.60-9,912.30-2,911.90

Finding the Fourth Proportional to 6,613.60, 9,912.30 and 2,911.90

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Solution

The fourth proportional to 6,613.60, 9,912.30 and 2,911.90 is: 4,364.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.60 : 9,912.30 = 2,911.90 : x
  2. Step 2: Convert to fraction form
    6,613.60/9,912.30 = 2,911.90/x
  3. Step 3: Cross multiply
    6,613.60x = 9,912.30 × 2,911.90
  4. Step 4: Simplify right side
    6,613.60x = 28,863,626.37
  5. Step 5: Solve for x
    x = 28,863,626.37/6,613.60
  6. Step 6: Final answer
    x = 4,364.28

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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.