Home / 2,722.30-4,088.40-1,628.80

Finding the Fourth Proportional to 2,722.30, 4,088.40 and 1,628.80

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Solution

The fourth proportional to 2,722.30, 4,088.40 and 1,628.80 is: 2,446.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.30 : 4,088.40 = 1,628.80 : x
  2. Step 2: Convert to fraction form
    2,722.30/4,088.40 = 1,628.80/x
  3. Step 3: Cross multiply
    2,722.30x = 4,088.40 × 1,628.80
  4. Step 4: Simplify right side
    2,722.30x = 6,659,185.92
  5. Step 5: Solve for x
    x = 6,659,185.92/2,722.30
  6. Step 6: Final answer
    x = 2,446.16

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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.