Home / 5,695.12-7,859.16-3,211.12

Finding the Fourth Proportional to 5,695.12, 7,859.16 and 3,211.12

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Solution

The fourth proportional to 5,695.12, 7,859.16 and 3,211.12 is: 4,431.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,695.12 : 7,859.16 = 3,211.12 : x
  2. Step 2: Convert to fraction form
    5,695.12/7,859.16 = 3,211.12/x
  3. Step 3: Cross multiply
    5,695.12x = 7,859.16 × 3,211.12
  4. Step 4: Simplify right side
    5,695.12x = 25,236,705.86
  5. Step 5: Solve for x
    x = 25,236,705.86/5,695.12
  6. Step 6: Final answer
    x = 4,431.29

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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.