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Finding the Fourth Proportional to 7,393, 11,089.62 and 2,128.08

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Solution

The fourth proportional to 7,393, 11,089.62 and 2,128.08 is: 3,192.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,393 : 11,089.62 = 2,128.08 : x
  2. Step 2: Convert to fraction form
    7,393/11,089.62 = 2,128.08/x
  3. Step 3: Cross multiply
    7,393x = 11,089.62 × 2,128.08
  4. Step 4: Simplify right side
    7,393x = 23,599,598.53
  5. Step 5: Solve for x
    x = 23,599,598.53/7,393
  6. Step 6: Final answer
    x = 3,192.15

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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.