Home / 1,919.10-2,878.92-982.38

Finding the Fourth Proportional to 1,919.10, 2,878.92 and 982.38

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Solution

The fourth proportional to 1,919.10, 2,878.92 and 982.38 is: 1,473.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.10 : 2,878.92 = 982.38 : x
  2. Step 2: Convert to fraction form
    1,919.10/2,878.92 = 982.38/x
  3. Step 3: Cross multiply
    1,919.10x = 2,878.92 × 982.38
  4. Step 4: Simplify right side
    1,919.10x = 2,828,193.43
  5. Step 5: Solve for x
    x = 2,828,193.43/1,919.10
  6. Step 6: Final answer
    x = 1,473.71

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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.