Home / 1,684.30-2,324.19-985.72

Finding the Fourth Proportional to 1,684.30, 2,324.19 and 985.72

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Solution

The fourth proportional to 1,684.30, 2,324.19 and 985.72 is: 1,360.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.30 : 2,324.19 = 985.72 : x
  2. Step 2: Convert to fraction form
    1,684.30/2,324.19 = 985.72/x
  3. Step 3: Cross multiply
    1,684.30x = 2,324.19 × 985.72
  4. Step 4: Simplify right side
    1,684.30x = 2,291,000.57
  5. Step 5: Solve for x
    x = 2,291,000.57/1,684.30
  6. Step 6: Final answer
    x = 1,360.21

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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.