Home / 8,979.24-12,391.20-4,999.44

Finding the Fourth Proportional to 8,979.24, 12,391.20 and 4,999.44

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Solution

The fourth proportional to 8,979.24, 12,391.20 and 4,999.44 is: 6,899.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.24 : 12,391.20 = 4,999.44 : x
  2. Step 2: Convert to fraction form
    8,979.24/12,391.20 = 4,999.44/x
  3. Step 3: Cross multiply
    8,979.24x = 12,391.20 × 4,999.44
  4. Step 4: Simplify right side
    8,979.24x = 61,949,060.93
  5. Step 5: Solve for x
    x = 61,949,060.93/8,979.24
  6. Step 6: Final answer
    x = 6,899.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.