Home / 9,121.25-12,582.46-6,131.95

Finding the Fourth Proportional to 9,121.25, 12,582.46 and 6,131.95

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Solution

The fourth proportional to 9,121.25, 12,582.46 and 6,131.95 is: 8,458.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.25 : 12,582.46 = 6,131.95 : x
  2. Step 2: Convert to fraction form
    9,121.25/12,582.46 = 6,131.95/x
  3. Step 3: Cross multiply
    9,121.25x = 12,582.46 × 6,131.95
  4. Step 4: Simplify right side
    9,121.25x = 77,155,015.60
  5. Step 5: Solve for x
    x = 77,155,015.60/9,121.25
  6. Step 6: Final answer
    x = 8,458.82

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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.