Home / 6,815.60-10,223.40-3,894.20

Finding the Fourth Proportional to 6,815.60, 10,223.40 and 3,894.20

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Solution

The fourth proportional to 6,815.60, 10,223.40 and 3,894.20 is: 5,841.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,815.60 : 10,223.40 = 3,894.20 : x
  2. Step 2: Convert to fraction form
    6,815.60/10,223.40 = 3,894.20/x
  3. Step 3: Cross multiply
    6,815.60x = 10,223.40 × 3,894.20
  4. Step 4: Simplify right side
    6,815.60x = 39,811,964.28
  5. Step 5: Solve for x
    x = 39,811,964.28/6,815.60
  6. Step 6: Final answer
    x = 5,841.30

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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.