Home / 2,030.40-2,815.11-1,919.69

Finding the Fourth Proportional to 2,030.40, 2,815.11 and 1,919.69

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Solution

The fourth proportional to 2,030.40, 2,815.11 and 1,919.69 is: 2,661.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,030.40 : 2,815.11 = 1,919.69 : x
  2. Step 2: Convert to fraction form
    2,030.40/2,815.11 = 1,919.69/x
  3. Step 3: Cross multiply
    2,030.40x = 2,815.11 × 1,919.69
  4. Step 4: Simplify right side
    2,030.40x = 5,404,124.44
  5. Step 5: Solve for x
    x = 5,404,124.44/2,030.40
  6. Step 6: Final answer
    x = 2,661.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.