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Finding the Fourth Proportional to 6,143.85, 8,479.08 and 3,490.56

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Solution

The fourth proportional to 6,143.85, 8,479.08 and 3,490.56 is: 4,817.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,143.85 : 8,479.08 = 3,490.56 : x
  2. Step 2: Convert to fraction form
    6,143.85/8,479.08 = 3,490.56/x
  3. Step 3: Cross multiply
    6,143.85x = 8,479.08 × 3,490.56
  4. Step 4: Simplify right side
    6,143.85x = 29,596,737.48
  5. Step 5: Solve for x
    x = 29,596,737.48/6,143.85
  6. Step 6: Final answer
    x = 4,817.29

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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.