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Finding the Fourth Proportional to 3,387.63, 5,051.64 and 3,118.35

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Solution

The fourth proportional to 3,387.63, 5,051.64 and 3,118.35 is: 4,650.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.63 : 5,051.64 = 3,118.35 : x
  2. Step 2: Convert to fraction form
    3,387.63/5,051.64 = 3,118.35/x
  3. Step 3: Cross multiply
    3,387.63x = 5,051.64 × 3,118.35
  4. Step 4: Simplify right side
    3,387.63x = 15,752,781.59
  5. Step 5: Solve for x
    x = 15,752,781.59/3,387.63
  6. Step 6: Final answer
    x = 4,650.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.