Home / 8,928.36-12,321.20-4,949.76

Finding the Fourth Proportional to 8,928.36, 12,321.20 and 4,949.76

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Solution

The fourth proportional to 8,928.36, 12,321.20 and 4,949.76 is: 6,830.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.36 : 12,321.20 = 4,949.76 : x
  2. Step 2: Convert to fraction form
    8,928.36/12,321.20 = 4,949.76/x
  3. Step 3: Cross multiply
    8,928.36x = 12,321.20 × 4,949.76
  4. Step 4: Simplify right side
    8,928.36x = 60,986,982.91
  5. Step 5: Solve for x
    x = 60,986,982.91/8,928.36
  6. Step 6: Final answer
    x = 6,830.70

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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.