Home / 3,214.80-4,822.20-1,983.60

Finding the Fourth Proportional to 3,214.80, 4,822.20 and 1,983.60

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Solution

The fourth proportional to 3,214.80, 4,822.20 and 1,983.60 is: 2,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.80 : 4,822.20 = 1,983.60 : x
  2. Step 2: Convert to fraction form
    3,214.80/4,822.20 = 1,983.60/x
  3. Step 3: Cross multiply
    3,214.80x = 4,822.20 × 1,983.60
  4. Step 4: Simplify right side
    3,214.80x = 9,565,315.92
  5. Step 5: Solve for x
    x = 9,565,315.92/3,214.80
  6. Step 6: Final answer
    x = 2,975.40

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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.