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Finding the Fourth Proportional to 6,213.68, 8,574.92 and 3,561.20

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Solution

The fourth proportional to 6,213.68, 8,574.92 and 3,561.20 is: 4,914.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,213.68 : 8,574.92 = 3,561.20 : x
  2. Step 2: Convert to fraction form
    6,213.68/8,574.92 = 3,561.20/x
  3. Step 3: Cross multiply
    6,213.68x = 8,574.92 × 3,561.20
  4. Step 4: Simplify right side
    6,213.68x = 30,537,005.10
  5. Step 5: Solve for x
    x = 30,537,005.10/6,213.68
  6. Step 6: Final answer
    x = 4,914.48

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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.