Home / 8,278.47-12,421.77-3,351.66

Finding the Fourth Proportional to 8,278.47, 12,421.77 and 3,351.66

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Solution

The fourth proportional to 8,278.47, 12,421.77 and 3,351.66 is: 5,029.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.47 : 12,421.77 = 3,351.66 : x
  2. Step 2: Convert to fraction form
    8,278.47/12,421.77 = 3,351.66/x
  3. Step 3: Cross multiply
    8,278.47x = 12,421.77 × 3,351.66
  4. Step 4: Simplify right side
    8,278.47x = 41,633,549.64
  5. Step 5: Solve for x
    x = 41,633,549.64/8,278.47
  6. Step 6: Final answer
    x = 5,029.14

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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.