Home / 7,987.16-11,982.70-2,440.60

Finding the Fourth Proportional to 7,987.16, 11,982.70 and 2,440.60

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Solution

The fourth proportional to 7,987.16, 11,982.70 and 2,440.60 is: 3,661.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.16 : 11,982.70 = 2,440.60 : x
  2. Step 2: Convert to fraction form
    7,987.16/11,982.70 = 2,440.60/x
  3. Step 3: Cross multiply
    7,987.16x = 11,982.70 × 2,440.60
  4. Step 4: Simplify right side
    7,987.16x = 29,244,977.62
  5. Step 5: Solve for x
    x = 29,244,977.62/7,987.16
  6. Step 6: Final answer
    x = 3,661.50

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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.