Home / 4,379.31-6,561.66-3,078.45

Finding the Fourth Proportional to 4,379.31, 6,561.66 and 3,078.45

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Solution

The fourth proportional to 4,379.31, 6,561.66 and 3,078.45 is: 4,612.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,379.31 : 6,561.66 = 3,078.45 : x
  2. Step 2: Convert to fraction form
    4,379.31/6,561.66 = 3,078.45/x
  3. Step 3: Cross multiply
    4,379.31x = 6,561.66 × 3,078.45
  4. Step 4: Simplify right side
    4,379.31x = 20,199,742.23
  5. Step 5: Solve for x
    x = 20,199,742.23/4,379.31
  6. Step 6: Final answer
    x = 4,612.54

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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.