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Finding the Fourth Proportional to 6,216.63, 8,578.95 and 3,422.13

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Solution

The fourth proportional to 6,216.63, 8,578.95 and 3,422.13 is: 4,722.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,216.63 : 8,578.95 = 3,422.13 : x
  2. Step 2: Convert to fraction form
    6,216.63/8,578.95 = 3,422.13/x
  3. Step 3: Cross multiply
    6,216.63x = 8,578.95 × 3,422.13
  4. Step 4: Simplify right side
    6,216.63x = 29,358,222.16
  5. Step 5: Solve for x
    x = 29,358,222.16/6,216.63
  6. Step 6: Final answer
    x = 4,722.53

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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.