Home / 3,915.30-5,402.43-2,236.48

Finding the Fourth Proportional to 3,915.30, 5,402.43 and 2,236.48

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Solution

The fourth proportional to 3,915.30, 5,402.43 and 2,236.48 is: 3,085.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.30 : 5,402.43 = 2,236.48 : x
  2. Step 2: Convert to fraction form
    3,915.30/5,402.43 = 2,236.48/x
  3. Step 3: Cross multiply
    3,915.30x = 5,402.43 × 2,236.48
  4. Step 4: Simplify right side
    3,915.30x = 12,082,413.14
  5. Step 5: Solve for x
    x = 12,082,413.14/3,915.30
  6. Step 6: Final answer
    x = 3,085.95

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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.