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Finding the Fourth Proportional to 6,143.96, 8,478.64 and 3,349.46

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Solution

The fourth proportional to 6,143.96, 8,478.64 and 3,349.46 is: 4,622.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,143.96 : 8,478.64 = 3,349.46 : x
  2. Step 2: Convert to fraction form
    6,143.96/8,478.64 = 3,349.46/x
  3. Step 3: Cross multiply
    6,143.96x = 8,478.64 × 3,349.46
  4. Step 4: Simplify right side
    6,143.96x = 28,398,865.53
  5. Step 5: Solve for x
    x = 28,398,865.53/6,143.96
  6. Step 6: Final answer
    x = 4,622.24

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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.