Home / 5,213.16-7,191.72-3,116.88

Finding the Fourth Proportional to 5,213.16, 7,191.72 and 3,116.88

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Solution

The fourth proportional to 5,213.16, 7,191.72 and 3,116.88 is: 4,299.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.16 : 7,191.72 = 3,116.88 : x
  2. Step 2: Convert to fraction form
    5,213.16/7,191.72 = 3,116.88/x
  3. Step 3: Cross multiply
    5,213.16x = 7,191.72 × 3,116.88
  4. Step 4: Simplify right side
    5,213.16x = 22,415,728.23
  5. Step 5: Solve for x
    x = 22,415,728.23/5,213.16
  6. Step 6: Final answer
    x = 4,299.84

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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.