Home / 3,181.40-4,766.58-1,721.56

Finding the Fourth Proportional to 3,181.40, 4,766.58 and 1,721.56

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Solution

The fourth proportional to 3,181.40, 4,766.58 and 1,721.56 is: 2,579.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.40 : 4,766.58 = 1,721.56 : x
  2. Step 2: Convert to fraction form
    3,181.40/4,766.58 = 1,721.56/x
  3. Step 3: Cross multiply
    3,181.40x = 4,766.58 × 1,721.56
  4. Step 4: Simplify right side
    3,181.40x = 8,205,953.46
  5. Step 5: Solve for x
    x = 8,205,953.46/3,181.40
  6. Step 6: Final answer
    x = 2,579.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.