Home / 8,291.03-12,439.37-3,908.79

Finding the Fourth Proportional to 8,291.03, 12,439.37 and 3,908.79

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Solution

The fourth proportional to 8,291.03, 12,439.37 and 3,908.79 is: 5,864.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,291.03 : 12,439.37 = 3,908.79 : x
  2. Step 2: Convert to fraction form
    8,291.03/12,439.37 = 3,908.79/x
  3. Step 3: Cross multiply
    8,291.03x = 12,439.37 × 3,908.79
  4. Step 4: Simplify right side
    8,291.03x = 48,622,894.83
  5. Step 5: Solve for x
    x = 48,622,894.83/8,291.03
  6. Step 6: Final answer
    x = 5,864.52

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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.