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Finding the Fourth Proportional to 7,984.80, 11,980.08 and 3,598.92

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Solution

The fourth proportional to 7,984.80, 11,980.08 and 3,598.92 is: 5,399.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984.80 : 11,980.08 = 3,598.92 : x
  2. Step 2: Convert to fraction form
    7,984.80/11,980.08 = 3,598.92/x
  3. Step 3: Cross multiply
    7,984.80x = 11,980.08 × 3,598.92
  4. Step 4: Simplify right side
    7,984.80x = 43,115,349.51
  5. Step 5: Solve for x
    x = 43,115,349.51/7,984.80
  6. Step 6: Final answer
    x = 5,399.68

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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.