Home / 1,685.03-2,325.33-939.02

Finding the Fourth Proportional to 1,685.03, 2,325.33 and 939.02

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Solution

The fourth proportional to 1,685.03, 2,325.33 and 939.02 is: 1,295.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.03 : 2,325.33 = 939.02 : x
  2. Step 2: Convert to fraction form
    1,685.03/2,325.33 = 939.02/x
  3. Step 3: Cross multiply
    1,685.03x = 2,325.33 × 939.02
  4. Step 4: Simplify right side
    1,685.03x = 2,183,531.38
  5. Step 5: Solve for x
    x = 2,183,531.38/1,685.03
  6. Step 6: Final answer
    x = 1,295.84

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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.