Home / 1,685.14-2,325.48-939.06

Finding the Fourth Proportional to 1,685.14, 2,325.48 and 939.06

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Solution

The fourth proportional to 1,685.14, 2,325.48 and 939.06 is: 1,295.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.14 : 2,325.48 = 939.06 : x
  2. Step 2: Convert to fraction form
    1,685.14/2,325.48 = 939.06/x
  3. Step 3: Cross multiply
    1,685.14x = 2,325.48 × 939.06
  4. Step 4: Simplify right side
    1,685.14x = 2,183,765.25
  5. Step 5: Solve for x
    x = 2,183,765.25/1,685.14
  6. Step 6: Final answer
    x = 1,295.90

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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.