Home / 4,783.95-7,176.34-1,321.20

Finding the Fourth Proportional to 4,783.95, 7,176.34 and 1,321.20

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Solution

The fourth proportional to 4,783.95, 7,176.34 and 1,321.20 is: 1,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,783.95 : 7,176.34 = 1,321.20 : x
  2. Step 2: Convert to fraction form
    4,783.95/7,176.34 = 1,321.20/x
  3. Step 3: Cross multiply
    4,783.95x = 7,176.34 × 1,321.20
  4. Step 4: Simplify right side
    4,783.95x = 9,481,380.41
  5. Step 5: Solve for x
    x = 9,481,380.41/4,783.95
  6. Step 6: Final answer
    x = 1,981.91

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Similar ratio
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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.