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Finding the Fourth Proportional to 6,235.78, 8,605.54 and 3,718.09

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Solution

The fourth proportional to 6,235.78, 8,605.54 and 3,718.09 is: 5,131.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,235.78 : 8,605.54 = 3,718.09 : x
  2. Step 2: Convert to fraction form
    6,235.78/8,605.54 = 3,718.09/x
  3. Step 3: Cross multiply
    6,235.78x = 8,605.54 × 3,718.09
  4. Step 4: Simplify right side
    6,235.78x = 31,996,172.22
  5. Step 5: Solve for x
    x = 31,996,172.22/6,235.78
  6. Step 6: Final answer
    x = 5,131.06

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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.