Home / 2,611.80-3,915.36-2,146.32

Finding the Fourth Proportional to 2,611.80, 3,915.36 and 2,146.32

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Solution

The fourth proportional to 2,611.80, 3,915.36 and 2,146.32 is: 3,217.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.80 : 3,915.36 = 2,146.32 : x
  2. Step 2: Convert to fraction form
    2,611.80/3,915.36 = 2,146.32/x
  3. Step 3: Cross multiply
    2,611.80x = 3,915.36 × 2,146.32
  4. Step 4: Simplify right side
    2,611.80x = 8,403,615.48
  5. Step 5: Solve for x
    x = 8,403,615.48/2,611.80
  6. Step 6: Final answer
    x = 3,217.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.