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Finding the Fourth Proportional to 3,150, 4,347.52 and 1,908.72

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Solution

The fourth proportional to 3,150, 4,347.52 and 1,908.72 is: 2,634.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150 : 4,347.52 = 1,908.72 : x
  2. Step 2: Convert to fraction form
    3,150/4,347.52 = 1,908.72/x
  3. Step 3: Cross multiply
    3,150x = 4,347.52 × 1,908.72
  4. Step 4: Simplify right side
    3,150x = 8,298,198.37
  5. Step 5: Solve for x
    x = 8,298,198.37/3,150
  6. Step 6: Final answer
    x = 2,634.35

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1.5x scale

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.