Home / 4,120.75-6,181.90-1,655.76

Finding the Fourth Proportional to 4,120.75, 6,181.90 and 1,655.76

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Solution

The fourth proportional to 4,120.75, 6,181.90 and 1,655.76 is: 2,483.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.75 : 6,181.90 = 1,655.76 : x
  2. Step 2: Convert to fraction form
    4,120.75/6,181.90 = 1,655.76/x
  3. Step 3: Cross multiply
    4,120.75x = 6,181.90 × 1,655.76
  4. Step 4: Simplify right side
    4,120.75x = 10,235,742.74
  5. Step 5: Solve for x
    x = 10,235,742.74/4,120.75
  6. Step 6: Final answer
    x = 2,483.95

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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.