Home / 5,121.15-7,068.16-3,207.86

Finding the Fourth Proportional to 5,121.15, 7,068.16 and 3,207.86

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Solution

The fourth proportional to 5,121.15, 7,068.16 and 3,207.86 is: 4,427.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.15 : 7,068.16 = 3,207.86 : x
  2. Step 2: Convert to fraction form
    5,121.15/7,068.16 = 3,207.86/x
  3. Step 3: Cross multiply
    5,121.15x = 7,068.16 × 3,207.86
  4. Step 4: Simplify right side
    5,121.15x = 22,673,662.91
  5. Step 5: Solve for x
    x = 22,673,662.91/5,121.15
  6. Step 6: Final answer
    x = 4,427.46

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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.