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Finding the Fourth Proportional to 8,918.55, 13,373.94 and 4,757.63

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Solution

The fourth proportional to 8,918.55, 13,373.94 and 4,757.63 is: 7,134.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.55 : 13,373.94 = 4,757.63 : x
  2. Step 2: Convert to fraction form
    8,918.55/13,373.94 = 4,757.63/x
  3. Step 3: Cross multiply
    8,918.55x = 13,373.94 × 4,757.63
  4. Step 4: Simplify right side
    8,918.55x = 63,628,191.29
  5. Step 5: Solve for x
    x = 63,628,191.29/8,918.55
  6. Step 6: Final answer
    x = 7,134.37

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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.