Home / 1,918.19-2,874.50-1,039.95

Finding the Fourth Proportional to 1,918.19, 2,874.50 and 1,039.95

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Solution

The fourth proportional to 1,918.19, 2,874.50 and 1,039.95 is: 1,558.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.19 : 2,874.50 = 1,039.95 : x
  2. Step 2: Convert to fraction form
    1,918.19/2,874.50 = 1,039.95/x
  3. Step 3: Cross multiply
    1,918.19x = 2,874.50 × 1,039.95
  4. Step 4: Simplify right side
    1,918.19x = 2,989,331.08
  5. Step 5: Solve for x
    x = 2,989,331.08/1,918.19
  6. Step 6: Final answer
    x = 1,558.41

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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.