Home / 1,469.98-2,028.74-939.35

Finding the Fourth Proportional to 1,469.98, 2,028.74 and 939.35

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Solution

The fourth proportional to 1,469.98, 2,028.74 and 939.35 is: 1,296.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.98 : 2,028.74 = 939.35 : x
  2. Step 2: Convert to fraction form
    1,469.98/2,028.74 = 939.35/x
  3. Step 3: Cross multiply
    1,469.98x = 2,028.74 × 939.35
  4. Step 4: Simplify right side
    1,469.98x = 1,905,697.29
  5. Step 5: Solve for x
    x = 1,905,697.29/1,469.98
  6. Step 6: Final answer
    x = 1,296.41

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1.5x scale

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.