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Finding the Fourth Proportional to 6,407, 8,841.66 and 3,612.60

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Solution

The fourth proportional to 6,407, 8,841.66 and 3,612.60 is: 4,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,407 : 8,841.66 = 3,612.60 : x
  2. Step 2: Convert to fraction form
    6,407/8,841.66 = 3,612.60/x
  3. Step 3: Cross multiply
    6,407x = 8,841.66 × 3,612.60
  4. Step 4: Simplify right side
    6,407x = 31,941,380.92
  5. Step 5: Solve for x
    x = 31,941,380.92/6,407
  6. Step 6: Final answer
    x = 4,985.39

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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.