Home / 6,388.69-8,816.40-3,556.01

Finding the Fourth Proportional to 6,388.69, 8,816.40 and 3,556.01

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Solution

The fourth proportional to 6,388.69, 8,816.40 and 3,556.01 is: 4,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.69 : 8,816.40 = 3,556.01 : x
  2. Step 2: Convert to fraction form
    6,388.69/8,816.40 = 3,556.01/x
  3. Step 3: Cross multiply
    6,388.69x = 8,816.40 × 3,556.01
  4. Step 4: Simplify right side
    6,388.69x = 31,351,175.63
  5. Step 5: Solve for x
    x = 31,351,175.63/6,388.69
  6. Step 6: Final answer
    x = 4,907.29

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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.