Home / 8,178.30-11,286-4,641.57

Finding the Fourth Proportional to 8,178.30, 11,286 and 4,641.57

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Solution

The fourth proportional to 8,178.30, 11,286 and 4,641.57 is: 6,405.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.30 : 11,286 = 4,641.57 : x
  2. Step 2: Convert to fraction form
    8,178.30/11,286 = 4,641.57/x
  3. Step 3: Cross multiply
    8,178.30x = 11,286 × 4,641.57
  4. Step 4: Simplify right side
    8,178.30x = 52,384,759.02
  5. Step 5: Solve for x
    x = 52,384,759.02/8,178.30
  6. Step 6: Final answer
    x = 6,405.34

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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.