Home / 1,943.40-2,680.44-1,376

Finding the Fourth Proportional to 1,943.40, 2,680.44 and 1,376

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Solution

The fourth proportional to 1,943.40, 2,680.44 and 1,376 is: 1,897.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.40 : 2,680.44 = 1,376 : x
  2. Step 2: Convert to fraction form
    1,943.40/2,680.44 = 1,376/x
  3. Step 3: Cross multiply
    1,943.40x = 2,680.44 × 1,376
  4. Step 4: Simplify right side
    1,943.40x = 3,688,285.44
  5. Step 5: Solve for x
    x = 3,688,285.44/1,943.40
  6. Step 6: Final answer
    x = 1,897.85

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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.