Home / 1,907.89-2,631.79-1,376.17

Finding the Fourth Proportional to 1,907.89, 2,631.79 and 1,376.17

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Solution

The fourth proportional to 1,907.89, 2,631.79 and 1,376.17 is: 1,898.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.89 : 2,631.79 = 1,376.17 : x
  2. Step 2: Convert to fraction form
    1,907.89/2,631.79 = 1,376.17/x
  3. Step 3: Cross multiply
    1,907.89x = 2,631.79 × 1,376.17
  4. Step 4: Simplify right side
    1,907.89x = 3,621,800.39
  5. Step 5: Solve for x
    x = 3,621,800.39/1,907.89
  6. Step 6: Final answer
    x = 1,898.33

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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.