Home / 1,639.01-2,456.85-1,399.25

Finding the Fourth Proportional to 1,639.01, 2,456.85 and 1,399.25

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Solution

The fourth proportional to 1,639.01, 2,456.85 and 1,399.25 is: 2,097.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.01 : 2,456.85 = 1,399.25 : x
  2. Step 2: Convert to fraction form
    1,639.01/2,456.85 = 1,399.25/x
  3. Step 3: Cross multiply
    1,639.01x = 2,456.85 × 1,399.25
  4. Step 4: Simplify right side
    1,639.01x = 3,437,747.36
  5. Step 5: Solve for x
    x = 3,437,747.36/1,639.01
  6. Step 6: Final answer
    x = 2,097.45

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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.