Home / 6,619.50-9,135-4,261.86

Finding the Fourth Proportional to 6,619.50, 9,135 and 4,261.86

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Solution

The fourth proportional to 6,619.50, 9,135 and 4,261.86 is: 5,881.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.50 : 9,135 = 4,261.86 : x
  2. Step 2: Convert to fraction form
    6,619.50/9,135 = 4,261.86/x
  3. Step 3: Cross multiply
    6,619.50x = 9,135 × 4,261.86
  4. Step 4: Simplify right side
    6,619.50x = 38,932,091.10
  5. Step 5: Solve for x
    x = 38,932,091.10/6,619.50
  6. Step 6: Final answer
    x = 5,881.42

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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.