Home / 3,915.51-5,403.36-2,236.65

Finding the Fourth Proportional to 3,915.51, 5,403.36 and 2,236.65

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Solution

The fourth proportional to 3,915.51, 5,403.36 and 2,236.65 is: 3,086.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.51 : 5,403.36 = 2,236.65 : x
  2. Step 2: Convert to fraction form
    3,915.51/5,403.36 = 2,236.65/x
  3. Step 3: Cross multiply
    3,915.51x = 5,403.36 × 2,236.65
  4. Step 4: Simplify right side
    3,915.51x = 12,085,425.14
  5. Step 5: Solve for x
    x = 12,085,425.14/3,915.51
  6. Step 6: Final answer
    x = 3,086.55

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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.