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Finding the Fourth Proportional to 11,796, 17,700.48 and 5,640

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Solution

The fourth proportional to 11,796, 17,700.48 and 5,640 is: 8,463.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,796 : 17,700.48 = 5,640 : x
  2. Step 2: Convert to fraction form
    11,796/17,700.48 = 5,640/x
  3. Step 3: Cross multiply
    11,796x = 17,700.48 × 5,640
  4. Step 4: Simplify right side
    11,796x = 99,830,707.20
  5. Step 5: Solve for x
    x = 99,830,707.20/11,796
  6. Step 6: Final answer
    x = 8,463.10

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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.