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Finding the Fourth Proportional to 6,613.92, 9,918.72 and 2,230.74

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Solution

The fourth proportional to 6,613.92, 9,918.72 and 2,230.74 is: 3,345.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.92 : 9,918.72 = 2,230.74 : x
  2. Step 2: Convert to fraction form
    6,613.92/9,918.72 = 2,230.74/x
  3. Step 3: Cross multiply
    6,613.92x = 9,918.72 × 2,230.74
  4. Step 4: Simplify right side
    6,613.92x = 22,126,085.45
  5. Step 5: Solve for x
    x = 22,126,085.45/6,613.92
  6. Step 6: Final answer
    x = 3,345.38

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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.