Home / 7,822.86-11,734.32-1,979.47

Finding the Fourth Proportional to 7,822.86, 11,734.32 and 1,979.47

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Solution

The fourth proportional to 7,822.86, 11,734.32 and 1,979.47 is: 2,969.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,822.86 : 11,734.32 = 1,979.47 : x
  2. Step 2: Convert to fraction form
    7,822.86/11,734.32 = 1,979.47/x
  3. Step 3: Cross multiply
    7,822.86x = 11,734.32 × 1,979.47
  4. Step 4: Simplify right side
    7,822.86x = 23,227,734.41
  5. Step 5: Solve for x
    x = 23,227,734.41/7,822.86
  6. Step 6: Final answer
    x = 2,969.21

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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.