Home / 7,985.23-11,979.60-2,439.01

Finding the Fourth Proportional to 7,985.23, 11,979.60 and 2,439.01

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Solution

The fourth proportional to 7,985.23, 11,979.60 and 2,439.01 is: 3,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.23 : 11,979.60 = 2,439.01 : x
  2. Step 2: Convert to fraction form
    7,985.23/11,979.60 = 2,439.01/x
  3. Step 3: Cross multiply
    7,985.23x = 11,979.60 × 2,439.01
  4. Step 4: Simplify right side
    7,985.23x = 29,218,370.02
  5. Step 5: Solve for x
    x = 29,218,370.02/7,985.23
  6. Step 6: Final answer
    x = 3,659.05

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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.