Home / 2,739.42-3,781.38-1,621.32

Finding the Fourth Proportional to 2,739.42, 3,781.38 and 1,621.32

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Solution

The fourth proportional to 2,739.42, 3,781.38 and 1,621.32 is: 2,238.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.42 : 3,781.38 = 1,621.32 : x
  2. Step 2: Convert to fraction form
    2,739.42/3,781.38 = 1,621.32/x
  3. Step 3: Cross multiply
    2,739.42x = 3,781.38 × 1,621.32
  4. Step 4: Simplify right side
    2,739.42x = 6,130,818.92
  5. Step 5: Solve for x
    x = 6,130,818.92/2,739.42
  6. Step 6: Final answer
    x = 2,238.00

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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.