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Finding the Fourth Proportional to 8,860.40, 13,301.40 and 4,475.60

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Solution

The fourth proportional to 8,860.40, 13,301.40 and 4,475.60 is: 6,718.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.40 : 13,301.40 = 4,475.60 : x
  2. Step 2: Convert to fraction form
    8,860.40/13,301.40 = 4,475.60/x
  3. Step 3: Cross multiply
    8,860.40x = 13,301.40 × 4,475.60
  4. Step 4: Simplify right side
    8,860.40x = 59,531,745.84
  5. Step 5: Solve for x
    x = 59,531,745.84/8,860.40
  6. Step 6: Final answer
    x = 6,718.86

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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.