Home / 8,121.60-11,209.86-4,585.95

Finding the Fourth Proportional to 8,121.60, 11,209.86 and 4,585.95

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Solution

The fourth proportional to 8,121.60, 11,209.86 and 4,585.95 is: 6,329.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.60 : 11,209.86 = 4,585.95 : x
  2. Step 2: Convert to fraction form
    8,121.60/11,209.86 = 4,585.95/x
  3. Step 3: Cross multiply
    8,121.60x = 11,209.86 × 4,585.95
  4. Step 4: Simplify right side
    8,121.60x = 51,407,857.47
  5. Step 5: Solve for x
    x = 51,407,857.47/8,121.60
  6. Step 6: Final answer
    x = 6,329.77

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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.