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Finding the Fourth Proportional to 6,507.77, 8,975.86 and 4,239.61

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Solution

The fourth proportional to 6,507.77, 8,975.86 and 4,239.61 is: 5,847.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,507.77 : 8,975.86 = 4,239.61 : x
  2. Step 2: Convert to fraction form
    6,507.77/8,975.86 = 4,239.61/x
  3. Step 3: Cross multiply
    6,507.77x = 8,975.86 × 4,239.61
  4. Step 4: Simplify right side
    6,507.77x = 38,054,100.94
  5. Step 5: Solve for x
    x = 38,054,100.94/6,507.77
  6. Step 6: Final answer
    x = 5,847.49

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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.