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Finding the Fourth Proportional to 6,485.07, 9,665.91 and 6,115.98

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Solution

The fourth proportional to 6,485.07, 9,665.91 and 6,115.98 is: 9,115.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.07 : 9,665.91 = 6,115.98 : x
  2. Step 2: Convert to fraction form
    6,485.07/9,665.91 = 6,115.98/x
  3. Step 3: Cross multiply
    6,485.07x = 9,665.91 × 6,115.98
  4. Step 4: Simplify right side
    6,485.07x = 59,116,512.24
  5. Step 5: Solve for x
    x = 59,116,512.24/6,485.07
  6. Step 6: Final answer
    x = 9,115.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.