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Finding the Fourth Proportional to 8,538.13, 12,809.07 and 2,615.06

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Solution

The fourth proportional to 8,538.13, 12,809.07 and 2,615.06 is: 3,923.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.13 : 12,809.07 = 2,615.06 : x
  2. Step 2: Convert to fraction form
    8,538.13/12,809.07 = 2,615.06/x
  3. Step 3: Cross multiply
    8,538.13x = 12,809.07 × 2,615.06
  4. Step 4: Simplify right side
    8,538.13x = 33,496,496.40
  5. Step 5: Solve for x
    x = 33,496,496.40/8,538.13
  6. Step 6: Final answer
    x = 3,923.17

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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.