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Finding the Fourth Proportional to 6,149.72, 8,486.64 and 3,355.28

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Solution

The fourth proportional to 6,149.72, 8,486.64 and 3,355.28 is: 4,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,149.72 : 8,486.64 = 3,355.28 : x
  2. Step 2: Convert to fraction form
    6,149.72/8,486.64 = 3,355.28/x
  3. Step 3: Cross multiply
    6,149.72x = 8,486.64 × 3,355.28
  4. Step 4: Simplify right side
    6,149.72x = 28,475,053.46
  5. Step 5: Solve for x
    x = 28,475,053.46/6,149.72
  6. Step 6: Final answer
    x = 4,630.30

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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.