Home / 1,974.42-2,976.62-1,868.58

Finding the Fourth Proportional to 1,974.42, 2,976.62 and 1,868.58

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Solution

The fourth proportional to 1,974.42, 2,976.62 and 1,868.58 is: 2,817.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.42 : 2,976.62 = 1,868.58 : x
  2. Step 2: Convert to fraction form
    1,974.42/2,976.62 = 1,868.58/x
  3. Step 3: Cross multiply
    1,974.42x = 2,976.62 × 1,868.58
  4. Step 4: Simplify right side
    1,974.42x = 5,562,043.26
  5. Step 5: Solve for x
    x = 5,562,043.26/1,974.42
  6. Step 6: Final answer
    x = 2,817.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.