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Finding the Fourth Proportional to 8,678.50, 13,004.79 and 5,899.30

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Solution

The fourth proportional to 8,678.50, 13,004.79 and 5,899.30 is: 8,840.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.50 : 13,004.79 = 5,899.30 : x
  2. Step 2: Convert to fraction form
    8,678.50/13,004.79 = 5,899.30/x
  3. Step 3: Cross multiply
    8,678.50x = 13,004.79 × 5,899.30
  4. Step 4: Simplify right side
    8,678.50x = 76,719,157.65
  5. Step 5: Solve for x
    x = 76,719,157.65/8,678.50
  6. Step 6: Final answer
    x = 8,840.14

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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.