Home / 1,919.03-2,647.50-1,079.54

Finding the Fourth Proportional to 1,919.03, 2,647.50 and 1,079.54

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Solution

The fourth proportional to 1,919.03, 2,647.50 and 1,079.54 is: 1,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.03 : 2,647.50 = 1,079.54 : x
  2. Step 2: Convert to fraction form
    1,919.03/2,647.50 = 1,079.54/x
  3. Step 3: Cross multiply
    1,919.03x = 2,647.50 × 1,079.54
  4. Step 4: Simplify right side
    1,919.03x = 2,858,068.91
  5. Step 5: Solve for x
    x = 2,858,068.91/1,919.03
  6. Step 6: Final answer
    x = 1,489.33

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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.