Home / 8,976.56-12,389.10-5,199.80

Finding the Fourth Proportional to 8,976.56, 12,389.10 and 5,199.80

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Solution

The fourth proportional to 8,976.56, 12,389.10 and 5,199.80 is: 7,176.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.56 : 12,389.10 = 5,199.80 : x
  2. Step 2: Convert to fraction form
    8,976.56/12,389.10 = 5,199.80/x
  3. Step 3: Cross multiply
    8,976.56x = 12,389.10 × 5,199.80
  4. Step 4: Simplify right side
    8,976.56x = 64,420,842.18
  5. Step 5: Solve for x
    x = 64,420,842.18/8,976.56
  6. Step 6: Final answer
    x = 7,176.56

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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.