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Finding the Fourth Proportional to 8,679.13, 11,977.23 and 4,700.23

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Solution

The fourth proportional to 8,679.13, 11,977.23 and 4,700.23 is: 6,486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.13 : 11,977.23 = 4,700.23 : x
  2. Step 2: Convert to fraction form
    8,679.13/11,977.23 = 4,700.23/x
  3. Step 3: Cross multiply
    8,679.13x = 11,977.23 × 4,700.23
  4. Step 4: Simplify right side
    8,679.13x = 56,295,735.76
  5. Step 5: Solve for x
    x = 56,295,735.76/8,679.13
  6. Step 6: Final answer
    x = 6,486.33

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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.