Home / 8,429.91-12,645.47-3,235.78

Finding the Fourth Proportional to 8,429.91, 12,645.47 and 3,235.78

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Solution

The fourth proportional to 8,429.91, 12,645.47 and 3,235.78 is: 4,853.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.91 : 12,645.47 = 3,235.78 : x
  2. Step 2: Convert to fraction form
    8,429.91/12,645.47 = 3,235.78/x
  3. Step 3: Cross multiply
    8,429.91x = 12,645.47 × 3,235.78
  4. Step 4: Simplify right side
    8,429.91x = 40,917,964.61
  5. Step 5: Solve for x
    x = 40,917,964.61/8,429.91
  6. Step 6: Final answer
    x = 4,853.91

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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.