Home / 3,213.80-4,817.10-1,653.20

Finding the Fourth Proportional to 3,213.80, 4,817.10 and 1,653.20

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Solution

The fourth proportional to 3,213.80, 4,817.10 and 1,653.20 is: 2,477.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.80 : 4,817.10 = 1,653.20 : x
  2. Step 2: Convert to fraction form
    3,213.80/4,817.10 = 1,653.20/x
  3. Step 3: Cross multiply
    3,213.80x = 4,817.10 × 1,653.20
  4. Step 4: Simplify right side
    3,213.80x = 7,963,629.72
  5. Step 5: Solve for x
    x = 7,963,629.72/3,213.80
  6. Step 6: Final answer
    x = 2,477.95

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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.