Home / 7,920.06-11,879.01-2,076.18

Finding the Fourth Proportional to 7,920.06, 11,879.01 and 2,076.18

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Solution

The fourth proportional to 7,920.06, 11,879.01 and 2,076.18 is: 3,113.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.06 : 11,879.01 = 2,076.18 : x
  2. Step 2: Convert to fraction form
    7,920.06/11,879.01 = 2,076.18/x
  3. Step 3: Cross multiply
    7,920.06x = 11,879.01 × 2,076.18
  4. Step 4: Simplify right side
    7,920.06x = 24,662,962.98
  5. Step 5: Solve for x
    x = 24,662,962.98/7,920.06
  6. Step 6: Final answer
    x = 3,113.99

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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.