Home / 1,918.84-2,876.64-1,138

Finding the Fourth Proportional to 1,918.84, 2,876.64 and 1,138

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Solution

The fourth proportional to 1,918.84, 2,876.64 and 1,138 is: 1,706.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.84 : 2,876.64 = 1,138 : x
  2. Step 2: Convert to fraction form
    1,918.84/2,876.64 = 1,138/x
  3. Step 3: Cross multiply
    1,918.84x = 2,876.64 × 1,138
  4. Step 4: Simplify right side
    1,918.84x = 3,273,616.32
  5. Step 5: Solve for x
    x = 3,273,616.32/1,918.84
  6. Step 6: Final answer
    x = 1,706.04

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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.