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Finding the Fourth Proportional to 8,679.07, 11,977.12 and 4,700.19

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Solution

The fourth proportional to 8,679.07, 11,977.12 and 4,700.19 is: 6,486.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.07 : 11,977.12 = 4,700.19 : x
  2. Step 2: Convert to fraction form
    8,679.07/11,977.12 = 4,700.19/x
  3. Step 3: Cross multiply
    8,679.07x = 11,977.12 × 4,700.19
  4. Step 4: Simplify right side
    8,679.07x = 56,294,739.65
  5. Step 5: Solve for x
    x = 56,294,739.65/8,679.07
  6. Step 6: Final answer
    x = 6,486.27

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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.