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Finding the Fourth Proportional to 6,613.50, 9,920.25 and 2,509.50

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Solution

The fourth proportional to 6,613.50, 9,920.25 and 2,509.50 is: 3,764.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.50 : 9,920.25 = 2,509.50 : x
  2. Step 2: Convert to fraction form
    6,613.50/9,920.25 = 2,509.50/x
  3. Step 3: Cross multiply
    6,613.50x = 9,920.25 × 2,509.50
  4. Step 4: Simplify right side
    6,613.50x = 24,894,867.38
  5. Step 5: Solve for x
    x = 24,894,867.38/6,613.50
  6. Step 6: Final answer
    x = 3,764.25

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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.