Home / 3,181.48-4,390.42-1,784.20

Finding the Fourth Proportional to 3,181.48, 4,390.42 and 1,784.20

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Solution

The fourth proportional to 3,181.48, 4,390.42 and 1,784.20 is: 2,462.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.48 : 4,390.42 = 1,784.20 : x
  2. Step 2: Convert to fraction form
    3,181.48/4,390.42 = 1,784.20/x
  3. Step 3: Cross multiply
    3,181.48x = 4,390.42 × 1,784.20
  4. Step 4: Simplify right side
    3,181.48x = 7,833,387.36
  5. Step 5: Solve for x
    x = 7,833,387.36/3,181.48
  6. Step 6: Final answer
    x = 2,462.18

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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.