Home / 1,916.95-2,879.07-1,191.60

Finding the Fourth Proportional to 1,916.95, 2,879.07 and 1,191.60

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Solution

The fourth proportional to 1,916.95, 2,879.07 and 1,191.60 is: 1,789.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.95 : 2,879.07 = 1,191.60 : x
  2. Step 2: Convert to fraction form
    1,916.95/2,879.07 = 1,191.60/x
  3. Step 3: Cross multiply
    1,916.95x = 2,879.07 × 1,191.60
  4. Step 4: Simplify right side
    1,916.95x = 3,430,685.42
  5. Step 5: Solve for x
    x = 3,430,685.42/1,916.95
  6. Step 6: Final answer
    x = 1,789.66

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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.