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Finding the Fourth Proportional to 6,494.78, 9,739.74 and 5,124.26

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Solution

The fourth proportional to 6,494.78, 9,739.74 and 5,124.26 is: 7,684.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,494.78 : 9,739.74 = 5,124.26 : x
  2. Step 2: Convert to fraction form
    6,494.78/9,739.74 = 5,124.26/x
  3. Step 3: Cross multiply
    6,494.78x = 9,739.74 × 5,124.26
  4. Step 4: Simplify right side
    6,494.78x = 49,908,960.09
  5. Step 5: Solve for x
    x = 49,908,960.09/6,494.78
  6. Step 6: Final answer
    x = 7,684.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.