Home / 1,685.33-2,325.85-939.37

Finding the Fourth Proportional to 1,685.33, 2,325.85 and 939.37

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Solution

The fourth proportional to 1,685.33, 2,325.85 and 939.37 is: 1,296.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.33 : 2,325.85 = 939.37 : x
  2. Step 2: Convert to fraction form
    1,685.33/2,325.85 = 939.37/x
  3. Step 3: Cross multiply
    1,685.33x = 2,325.85 × 939.37
  4. Step 4: Simplify right side
    1,685.33x = 2,184,825.55
  5. Step 5: Solve for x
    x = 2,184,825.55/1,685.33
  6. Step 6: Final answer
    x = 1,296.38

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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.