Home / 6,686.86-9,228.84-3,853.69

Finding the Fourth Proportional to 6,686.86, 9,228.84 and 3,853.69

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Solution

The fourth proportional to 6,686.86, 9,228.84 and 3,853.69 is: 5,318.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,686.86 : 9,228.84 = 3,853.69 : x
  2. Step 2: Convert to fraction form
    6,686.86/9,228.84 = 3,853.69/x
  3. Step 3: Cross multiply
    6,686.86x = 9,228.84 × 3,853.69
  4. Step 4: Simplify right side
    6,686.86x = 35,565,088.42
  5. Step 5: Solve for x
    x = 35,565,088.42/6,686.86
  6. Step 6: Final answer
    x = 5,318.65

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.