Home / 3,181.31-4,390.21-1,784.06

Finding the Fourth Proportional to 3,181.31, 4,390.21 and 1,784.06

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Solution

The fourth proportional to 3,181.31, 4,390.21 and 1,784.06 is: 2,462.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.31 : 4,390.21 = 1,784.06 : x
  2. Step 2: Convert to fraction form
    3,181.31/4,390.21 = 1,784.06/x
  3. Step 3: Cross multiply
    3,181.31x = 4,390.21 × 1,784.06
  4. Step 4: Simplify right side
    3,181.31x = 7,832,411.26
  5. Step 5: Solve for x
    x = 7,832,411.26/3,181.31
  6. Step 6: Final answer
    x = 2,462.01

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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.