Home / 3,946.80-5,915.40-1,753.20

Finding the Fourth Proportional to 3,946.80, 5,915.40 and 1,753.20

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Solution

The fourth proportional to 3,946.80, 5,915.40 and 1,753.20 is: 2,627.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.80 : 5,915.40 = 1,753.20 : x
  2. Step 2: Convert to fraction form
    3,946.80/5,915.40 = 1,753.20/x
  3. Step 3: Cross multiply
    3,946.80x = 5,915.40 × 1,753.20
  4. Step 4: Simplify right side
    3,946.80x = 10,370,879.28
  5. Step 5: Solve for x
    x = 10,370,879.28/3,946.80
  6. Step 6: Final answer
    x = 2,627.67

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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.