Home / 7,989.12-11,980.59-2,440.74

Finding the Fourth Proportional to 7,989.12, 11,980.59 and 2,440.74

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Solution

The fourth proportional to 7,989.12, 11,980.59 and 2,440.74 is: 3,660.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.12 : 11,980.59 = 2,440.74 : x
  2. Step 2: Convert to fraction form
    7,989.12/11,980.59 = 2,440.74/x
  3. Step 3: Cross multiply
    7,989.12x = 11,980.59 × 2,440.74
  4. Step 4: Simplify right side
    7,989.12x = 29,241,505.24
  5. Step 5: Solve for x
    x = 29,241,505.24/7,989.12
  6. Step 6: Final answer
    x = 3,660.17

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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.