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Finding the Fourth Proportional to 9,125.00, 13,686.80 and 5,615.49

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Solution

The fourth proportional to 9,125.00, 13,686.80 and 5,615.49 is: 8,422.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,125.00 : 13,686.80 = 5,615.49 : x
  2. Step 2: Convert to fraction form
    9,125.00/13,686.80 = 5,615.49/x
  3. Step 3: Cross multiply
    9,125.00x = 13,686.80 × 5,615.49
  4. Step 4: Simplify right side
    9,125.00x = 76,858,060.45
  5. Step 5: Solve for x
    x = 76,858,060.45/9,125.00
  6. Step 6: Final answer
    x = 8,422.81

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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.