Home / 3,181.44-4,390.40-1,784.28

Finding the Fourth Proportional to 3,181.44, 4,390.40 and 1,784.28

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Solution

The fourth proportional to 3,181.44, 4,390.40 and 1,784.28 is: 2,462.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.44 : 4,390.40 = 1,784.28 : x
  2. Step 2: Convert to fraction form
    3,181.44/4,390.40 = 1,784.28/x
  3. Step 3: Cross multiply
    3,181.44x = 4,390.40 × 1,784.28
  4. Step 4: Simplify right side
    3,181.44x = 7,833,702.91
  5. Step 5: Solve for x
    x = 7,833,702.91/3,181.44
  6. Step 6: Final answer
    x = 2,462.31

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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.