Home / 3,181.71-4,390.77-1,784.46

Finding the Fourth Proportional to 3,181.71, 4,390.77 and 1,784.46

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Solution

The fourth proportional to 3,181.71, 4,390.77 and 1,784.46 is: 2,462.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.71 : 4,390.77 = 1,784.46 : x
  2. Step 2: Convert to fraction form
    3,181.71/4,390.77 = 1,784.46/x
  3. Step 3: Cross multiply
    3,181.71x = 4,390.77 × 1,784.46
  4. Step 4: Simplify right side
    3,181.71x = 7,835,176.59
  5. Step 5: Solve for x
    x = 7,835,176.59/3,181.71
  6. Step 6: Final answer
    x = 2,462.56

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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.