Home / 3,915.48-5,407.40-3,383.28

Finding the Fourth Proportional to 3,915.48, 5,407.40 and 3,383.28

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Solution

The fourth proportional to 3,915.48, 5,407.40 and 3,383.28 is: 4,672.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.48 : 5,407.40 = 3,383.28 : x
  2. Step 2: Convert to fraction form
    3,915.48/5,407.40 = 3,383.28/x
  3. Step 3: Cross multiply
    3,915.48x = 5,407.40 × 3,383.28
  4. Step 4: Simplify right side
    3,915.48x = 18,294,748.27
  5. Step 5: Solve for x
    x = 18,294,748.27/3,915.48
  6. Step 6: Final answer
    x = 4,672.42

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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.