Home / 5,451.20-8,176.96-1,988.16

Finding the Fourth Proportional to 5,451.20, 8,176.96 and 1,988.16

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Solution

The fourth proportional to 5,451.20, 8,176.96 and 1,988.16 is: 2,982.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.20 : 8,176.96 = 1,988.16 : x
  2. Step 2: Convert to fraction form
    5,451.20/8,176.96 = 1,988.16/x
  3. Step 3: Cross multiply
    5,451.20x = 8,176.96 × 1,988.16
  4. Step 4: Simplify right side
    5,451.20x = 16,257,104.79
  5. Step 5: Solve for x
    x = 16,257,104.79/5,451.20
  6. Step 6: Final answer
    x = 2,982.30

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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.