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Finding the Fourth Proportional to 8,279, 12,417.18 and 3,347.36

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Solution

The fourth proportional to 8,279, 12,417.18 and 3,347.36 is: 5,020.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279 : 12,417.18 = 3,347.36 : x
  2. Step 2: Convert to fraction form
    8,279/12,417.18 = 3,347.36/x
  3. Step 3: Cross multiply
    8,279x = 12,417.18 × 3,347.36
  4. Step 4: Simplify right side
    8,279x = 41,564,771.64
  5. Step 5: Solve for x
    x = 41,564,771.64/8,279
  6. Step 6: Final answer
    x = 5,020.51

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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.