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Finding the Fourth Proportional to 8,278.54, 12,426.65 and 3,351.40

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Solution

The fourth proportional to 8,278.54, 12,426.65 and 3,351.40 is: 5,030.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.54 : 12,426.65 = 3,351.40 : x
  2. Step 2: Convert to fraction form
    8,278.54/12,426.65 = 3,351.40/x
  3. Step 3: Cross multiply
    8,278.54x = 12,426.65 × 3,351.40
  4. Step 4: Simplify right side
    8,278.54x = 41,646,674.81
  5. Step 5: Solve for x
    x = 41,646,674.81/8,278.54
  6. Step 6: Final answer
    x = 5,030.68

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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.