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Finding the Fourth Proportional to 7,131.13, 10,696.89 and 1,937

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Solution

The fourth proportional to 7,131.13, 10,696.89 and 1,937 is: 2,905.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.13 : 10,696.89 = 1,937 : x
  2. Step 2: Convert to fraction form
    7,131.13/10,696.89 = 1,937/x
  3. Step 3: Cross multiply
    7,131.13x = 10,696.89 × 1,937
  4. Step 4: Simplify right side
    7,131.13x = 20,719,875.93
  5. Step 5: Solve for x
    x = 20,719,875.93/7,131.13
  6. Step 6: Final answer
    x = 2,905.55

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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.