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Finding the Fourth Proportional to 6,324.78, 8,739.80 and 5,482.79

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Solution

The fourth proportional to 6,324.78, 8,739.80 and 5,482.79 is: 7,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,324.78 : 8,739.80 = 5,482.79 : x
  2. Step 2: Convert to fraction form
    6,324.78/8,739.80 = 5,482.79/x
  3. Step 3: Cross multiply
    6,324.78x = 8,739.80 × 5,482.79
  4. Step 4: Simplify right side
    6,324.78x = 47,918,416.93
  5. Step 5: Solve for x
    x = 47,918,416.93/6,324.78
  6. Step 6: Final answer
    x = 7,576.30

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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.