Home / 3,261.30-4,890.78-1,180.76

Finding the Fourth Proportional to 3,261.30, 4,890.78 and 1,180.76

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Solution

The fourth proportional to 3,261.30, 4,890.78 and 1,180.76 is: 1,770.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.30 : 4,890.78 = 1,180.76 : x
  2. Step 2: Convert to fraction form
    3,261.30/4,890.78 = 1,180.76/x
  3. Step 3: Cross multiply
    3,261.30x = 4,890.78 × 1,180.76
  4. Step 4: Simplify right side
    3,261.30x = 5,774,825.17
  5. Step 5: Solve for x
    x = 5,774,825.17/3,261.30
  6. Step 6: Final answer
    x = 1,770.72

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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.