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Finding the Fourth Proportional to 3,393.90, 4,687.47 and 2,703.78

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Solution

The fourth proportional to 3,393.90, 4,687.47 and 2,703.78 is: 3,734.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.90 : 4,687.47 = 2,703.78 : x
  2. Step 2: Convert to fraction form
    3,393.90/4,687.47 = 2,703.78/x
  3. Step 3: Cross multiply
    3,393.90x = 4,687.47 × 2,703.78
  4. Step 4: Simplify right side
    3,393.90x = 12,673,887.64
  5. Step 5: Solve for x
    x = 12,673,887.64/3,393.90
  6. Step 6: Final answer
    x = 3,734.31

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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.