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Finding the Fourth Proportional to 12,610.34, 18,910.03 and 4,288.12

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Solution

The fourth proportional to 12,610.34, 18,910.03 and 4,288.12 is: 6,430.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,610.34 : 18,910.03 = 4,288.12 : x
  2. Step 2: Convert to fraction form
    12,610.34/18,910.03 = 4,288.12/x
  3. Step 3: Cross multiply
    12,610.34x = 18,910.03 × 4,288.12
  4. Step 4: Simplify right side
    12,610.34x = 81,088,419.85
  5. Step 5: Solve for x
    x = 81,088,419.85/12,610.34
  6. Step 6: Final answer
    x = 6,430.31

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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.