Home / 7,990.78-11,986.16-2,444.12

Finding the Fourth Proportional to 7,990.78, 11,986.16 and 2,444.12

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Solution

The fourth proportional to 7,990.78, 11,986.16 and 2,444.12 is: 3,666.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.78 : 11,986.16 = 2,444.12 : x
  2. Step 2: Convert to fraction form
    7,990.78/11,986.16 = 2,444.12/x
  3. Step 3: Cross multiply
    7,990.78x = 11,986.16 × 2,444.12
  4. Step 4: Simplify right side
    7,990.78x = 29,295,599.92
  5. Step 5: Solve for x
    x = 29,295,599.92/7,990.78
  6. Step 6: Final answer
    x = 3,666.18

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Double scale
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Similar ratio
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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.