Home / 8,988.96-13,479.78-3,144.20

Finding the Fourth Proportional to 8,988.96, 13,479.78 and 3,144.20

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Solution

The fourth proportional to 8,988.96, 13,479.78 and 3,144.20 is: 4,715.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.96 : 13,479.78 = 3,144.20 : x
  2. Step 2: Convert to fraction form
    8,988.96/13,479.78 = 3,144.20/x
  3. Step 3: Cross multiply
    8,988.96x = 13,479.78 × 3,144.20
  4. Step 4: Simplify right side
    8,988.96x = 42,383,124.28
  5. Step 5: Solve for x
    x = 42,383,124.28/8,988.96
  6. Step 6: Final answer
    x = 4,715.02

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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.