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Finding the Fourth Proportional to 6,220.72, 8,583.72 and 3,426.40

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Solution

The fourth proportional to 6,220.72, 8,583.72 and 3,426.40 is: 4,727.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,220.72 : 8,583.72 = 3,426.40 : x
  2. Step 2: Convert to fraction form
    6,220.72/8,583.72 = 3,426.40/x
  3. Step 3: Cross multiply
    6,220.72x = 8,583.72 × 3,426.40
  4. Step 4: Simplify right side
    6,220.72x = 29,411,258.21
  5. Step 5: Solve for x
    x = 29,411,258.21/6,220.72
  6. Step 6: Final answer
    x = 4,727.95

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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.