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Finding the Fourth Proportional to 2,739.31, 4,106.92 and 889.32

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Solution

The fourth proportional to 2,739.31, 4,106.92 and 889.32 is: 1,333.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.31 : 4,106.92 = 889.32 : x
  2. Step 2: Convert to fraction form
    2,739.31/4,106.92 = 889.32/x
  3. Step 3: Cross multiply
    2,739.31x = 4,106.92 × 889.32
  4. Step 4: Simplify right side
    2,739.31x = 3,652,374.14
  5. Step 5: Solve for x
    x = 3,652,374.14/2,739.31
  6. Step 6: Final answer
    x = 1,333.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.