Home / 8,728.50-13,084.81-3,180.58

Finding the Fourth Proportional to 8,728.50, 13,084.81 and 3,180.58

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Solution

The fourth proportional to 8,728.50, 13,084.81 and 3,180.58 is: 4,767.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.50 : 13,084.81 = 3,180.58 : x
  2. Step 2: Convert to fraction form
    8,728.50/13,084.81 = 3,180.58/x
  3. Step 3: Cross multiply
    8,728.50x = 13,084.81 × 3,180.58
  4. Step 4: Simplify right side
    8,728.50x = 41,617,335.82
  5. Step 5: Solve for x
    x = 41,617,335.82/8,728.50
  6. Step 6: Final answer
    x = 4,767.98

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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.