Home / 2,786.71-4,181.43-1,970.23

Finding the Fourth Proportional to 2,786.71, 4,181.43 and 1,970.23

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Solution

The fourth proportional to 2,786.71, 4,181.43 and 1,970.23 is: 2,956.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.71 : 4,181.43 = 1,970.23 : x
  2. Step 2: Convert to fraction form
    2,786.71/4,181.43 = 1,970.23/x
  3. Step 3: Cross multiply
    2,786.71x = 4,181.43 × 1,970.23
  4. Step 4: Simplify right side
    2,786.71x = 8,238,378.83
  5. Step 5: Solve for x
    x = 8,238,378.83/2,786.71
  6. Step 6: Final answer
    x = 2,956.31

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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.