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Finding the Fourth Proportional to 5,100, 7,034.64 and 3,681.30

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Solution

The fourth proportional to 5,100, 7,034.64 and 3,681.30 is: 5,077.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100 : 7,034.64 = 3,681.30 : x
  2. Step 2: Convert to fraction form
    5,100/7,034.64 = 3,681.30/x
  3. Step 3: Cross multiply
    5,100x = 7,034.64 × 3,681.30
  4. Step 4: Simplify right side
    5,100x = 25,896,620.23
  5. Step 5: Solve for x
    x = 25,896,620.23/5,100
  6. Step 6: Final answer
    x = 5,077.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.