Home / 8,681.06-13,021.40-2,107.28

Finding the Fourth Proportional to 8,681.06, 13,021.40 and 2,107.28

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Solution

The fourth proportional to 8,681.06, 13,021.40 and 2,107.28 is: 3,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.06 : 13,021.40 = 2,107.28 : x
  2. Step 2: Convert to fraction form
    8,681.06/13,021.40 = 2,107.28/x
  3. Step 3: Cross multiply
    8,681.06x = 13,021.40 × 2,107.28
  4. Step 4: Simplify right side
    8,681.06x = 27,439,735.79
  5. Step 5: Solve for x
    x = 27,439,735.79/8,681.06
  6. Step 6: Final answer
    x = 3,160.87

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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.