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Finding the Fourth Proportional to 3,150.72, 4,347.36 and 1,908

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Solution

The fourth proportional to 3,150.72, 4,347.36 and 1,908 is: 2,632.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.72 : 4,347.36 = 1,908 : x
  2. Step 2: Convert to fraction form
    3,150.72/4,347.36 = 1,908/x
  3. Step 3: Cross multiply
    3,150.72x = 4,347.36 × 1,908
  4. Step 4: Simplify right side
    3,150.72x = 8,294,762.88
  5. Step 5: Solve for x
    x = 8,294,762.88/3,150.72
  6. Step 6: Final answer
    x = 2,632.66

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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.