Home / 3,915.36-5,394.48-3,817.92

Finding the Fourth Proportional to 3,915.36, 5,394.48 and 3,817.92

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Solution

The fourth proportional to 3,915.36, 5,394.48 and 3,817.92 is: 5,260.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.36 : 5,394.48 = 3,817.92 : x
  2. Step 2: Convert to fraction form
    3,915.36/5,394.48 = 3,817.92/x
  3. Step 3: Cross multiply
    3,915.36x = 5,394.48 × 3,817.92
  4. Step 4: Simplify right side
    3,915.36x = 20,595,693.08
  5. Step 5: Solve for x
    x = 20,595,693.08/3,915.36
  6. Step 6: Final answer
    x = 5,260.23

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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.