Home / 2,768.40-4,148.20-2,217.68

Finding the Fourth Proportional to 2,768.40, 4,148.20 and 2,217.68

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Solution

The fourth proportional to 2,768.40, 4,148.20 and 2,217.68 is: 3,323.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.40 : 4,148.20 = 2,217.68 : x
  2. Step 2: Convert to fraction form
    2,768.40/4,148.20 = 2,217.68/x
  3. Step 3: Cross multiply
    2,768.40x = 4,148.20 × 2,217.68
  4. Step 4: Simplify right side
    2,768.40x = 9,199,380.18
  5. Step 5: Solve for x
    x = 9,199,380.18/2,768.40
  6. Step 6: Final answer
    x = 3,323.00

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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.