Home / 3,915.46-5,403.26-2,147.02

Finding the Fourth Proportional to 3,915.46, 5,403.26 and 2,147.02

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Solution

The fourth proportional to 3,915.46, 5,403.26 and 2,147.02 is: 2,962.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.46 : 5,403.26 = 2,147.02 : x
  2. Step 2: Convert to fraction form
    3,915.46/5,403.26 = 2,147.02/x
  3. Step 3: Cross multiply
    3,915.46x = 5,403.26 × 2,147.02
  4. Step 4: Simplify right side
    3,915.46x = 11,600,907.29
  5. Step 5: Solve for x
    x = 11,600,907.29/3,915.46
  6. Step 6: Final answer
    x = 2,962.85

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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.