Home / 1,898.60-2,620.26-1,112.90

Finding the Fourth Proportional to 1,898.60, 2,620.26 and 1,112.90

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Solution

The fourth proportional to 1,898.60, 2,620.26 and 1,112.90 is: 1,535.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.60 : 2,620.26 = 1,112.90 : x
  2. Step 2: Convert to fraction form
    1,898.60/2,620.26 = 1,112.90/x
  3. Step 3: Cross multiply
    1,898.60x = 2,620.26 × 1,112.90
  4. Step 4: Simplify right side
    1,898.60x = 2,916,087.35
  5. Step 5: Solve for x
    x = 2,916,087.35/1,898.60
  6. Step 6: Final answer
    x = 1,535.91

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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.