Home / 1,890.96-2,815.21-1,881.84

Finding the Fourth Proportional to 1,890.96, 2,815.21 and 1,881.84

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Solution

The fourth proportional to 1,890.96, 2,815.21 and 1,881.84 is: 2,801.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.96 : 2,815.21 = 1,881.84 : x
  2. Step 2: Convert to fraction form
    1,890.96/2,815.21 = 1,881.84/x
  3. Step 3: Cross multiply
    1,890.96x = 2,815.21 × 1,881.84
  4. Step 4: Simplify right side
    1,890.96x = 5,297,787.70
  5. Step 5: Solve for x
    x = 5,297,787.70/1,890.96
  6. Step 6: Final answer
    x = 2,801.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.