Home / 1,910.90-2,631.19-1,439.50

Finding the Fourth Proportional to 1,910.90, 2,631.19 and 1,439.50

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Solution

The fourth proportional to 1,910.90, 2,631.19 and 1,439.50 is: 1,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.90 : 2,631.19 = 1,439.50 : x
  2. Step 2: Convert to fraction form
    1,910.90/2,631.19 = 1,439.50/x
  3. Step 3: Cross multiply
    1,910.90x = 2,631.19 × 1,439.50
  4. Step 4: Simplify right side
    1,910.90x = 3,787,598.01
  5. Step 5: Solve for x
    x = 3,787,598.01/1,910.90
  6. Step 6: Final answer
    x = 1,982.10

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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.