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Finding the Fourth Proportional to 8,757.36, 13,128.48 and 3,566.88

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Solution

The fourth proportional to 8,757.36, 13,128.48 and 3,566.88 is: 5,347.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.36 : 13,128.48 = 3,566.88 : x
  2. Step 2: Convert to fraction form
    8,757.36/13,128.48 = 3,566.88/x
  3. Step 3: Cross multiply
    8,757.36x = 13,128.48 × 3,566.88
  4. Step 4: Simplify right side
    8,757.36x = 46,827,712.74
  5. Step 5: Solve for x
    x = 46,827,712.74/8,757.36
  6. Step 6: Final answer
    x = 5,347.24

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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.