Home / 3,321.55-4,975.78-1,856.23

Finding the Fourth Proportional to 3,321.55, 4,975.78 and 1,856.23

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Solution

The fourth proportional to 3,321.55, 4,975.78 and 1,856.23 is: 2,780.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.55 : 4,975.78 = 1,856.23 : x
  2. Step 2: Convert to fraction form
    3,321.55/4,975.78 = 1,856.23/x
  3. Step 3: Cross multiply
    3,321.55x = 4,975.78 × 1,856.23
  4. Step 4: Simplify right side
    3,321.55x = 9,236,192.11
  5. Step 5: Solve for x
    x = 9,236,192.11/3,321.55
  6. Step 6: Final answer
    x = 2,780.69

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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.