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Finding the Fourth Proportional to 3,151.88, 4,349.60 and 1,754.63

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Solution

The fourth proportional to 3,151.88, 4,349.60 and 1,754.63 is: 2,421.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.88 : 4,349.60 = 1,754.63 : x
  2. Step 2: Convert to fraction form
    3,151.88/4,349.60 = 1,754.63/x
  3. Step 3: Cross multiply
    3,151.88x = 4,349.60 × 1,754.63
  4. Step 4: Simplify right side
    3,151.88x = 7,631,908.13
  5. Step 5: Solve for x
    x = 7,631,908.13/3,151.88
  6. Step 6: Final answer
    x = 2,421.39

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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.