Home / 2,175.73-3,001.40-1,388.95

Finding the Fourth Proportional to 2,175.73, 3,001.40 and 1,388.95

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Solution

The fourth proportional to 2,175.73, 3,001.40 and 1,388.95 is: 1,916.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.73 : 3,001.40 = 1,388.95 : x
  2. Step 2: Convert to fraction form
    2,175.73/3,001.40 = 1,388.95/x
  3. Step 3: Cross multiply
    2,175.73x = 3,001.40 × 1,388.95
  4. Step 4: Simplify right side
    2,175.73x = 4,168,787.59
  5. Step 5: Solve for x
    x = 4,168,787.59/2,175.73
  6. Step 6: Final answer
    x = 1,916.04

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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.