Home / 6,764.36-9,334.19-3,779.78

Finding the Fourth Proportional to 6,764.36, 9,334.19 and 3,779.78

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Solution

The fourth proportional to 6,764.36, 9,334.19 and 3,779.78 is: 5,215.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,764.36 : 9,334.19 = 3,779.78 : x
  2. Step 2: Convert to fraction form
    6,764.36/9,334.19 = 3,779.78/x
  3. Step 3: Cross multiply
    6,764.36x = 9,334.19 × 3,779.78
  4. Step 4: Simplify right side
    6,764.36x = 35,281,119.11
  5. Step 5: Solve for x
    x = 35,281,119.11/6,764.36
  6. Step 6: Final answer
    x = 5,215.74

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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.