Home / 7,822.40-11,734.00-1,979.06

Finding the Fourth Proportional to 7,822.40, 11,734.00 and 1,979.06

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Solution

The fourth proportional to 7,822.40, 11,734.00 and 1,979.06 is: 2,968.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,822.40 : 11,734.00 = 1,979.06 : x
  2. Step 2: Convert to fraction form
    7,822.40/11,734.00 = 1,979.06/x
  3. Step 3: Cross multiply
    7,822.40x = 11,734.00 × 1,979.06
  4. Step 4: Simplify right side
    7,822.40x = 23,222,226.42
  5. Step 5: Solve for x
    x = 23,222,226.42/7,822.40
  6. Step 6: Final answer
    x = 2,968.68

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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.