Home / 2,378.45-3,283.40-1,583.09

Finding the Fourth Proportional to 2,378.45, 3,283.40 and 1,583.09

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Solution

The fourth proportional to 2,378.45, 3,283.40 and 1,583.09 is: 2,185.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.45 : 3,283.40 = 1,583.09 : x
  2. Step 2: Convert to fraction form
    2,378.45/3,283.40 = 1,583.09/x
  3. Step 3: Cross multiply
    2,378.45x = 3,283.40 × 1,583.09
  4. Step 4: Simplify right side
    2,378.45x = 5,197,936.03
  5. Step 5: Solve for x
    x = 5,197,936.03/2,378.45
  6. Step 6: Final answer
    x = 2,185.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.