Home / 7,999.12-11,998.74-4,101.40

Finding the Fourth Proportional to 7,999.12, 11,998.74 and 4,101.40

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Solution

The fourth proportional to 7,999.12, 11,998.74 and 4,101.40 is: 6,152.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.12 : 11,998.74 = 4,101.40 : x
  2. Step 2: Convert to fraction form
    7,999.12/11,998.74 = 4,101.40/x
  3. Step 3: Cross multiply
    7,999.12x = 11,998.74 × 4,101.40
  4. Step 4: Simplify right side
    7,999.12x = 49,211,632.24
  5. Step 5: Solve for x
    x = 49,211,632.24/7,999.12
  6. Step 6: Final answer
    x = 6,152.13

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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.