Home / 1,911.15-2,862.47-1,619.55

Finding the Fourth Proportional to 1,911.15, 2,862.47 and 1,619.55

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Solution

The fourth proportional to 1,911.15, 2,862.47 and 1,619.55 is: 2,425.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.15 : 2,862.47 = 1,619.55 : x
  2. Step 2: Convert to fraction form
    1,911.15/2,862.47 = 1,619.55/x
  3. Step 3: Cross multiply
    1,911.15x = 2,862.47 × 1,619.55
  4. Step 4: Simplify right side
    1,911.15x = 4,635,917.34
  5. Step 5: Solve for x
    x = 4,635,917.34/1,911.15
  6. Step 6: Final answer
    x = 2,425.72

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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.