Home / 6,389.14-8,816.79-3,556.42

Finding the Fourth Proportional to 6,389.14, 8,816.79 and 3,556.42

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Solution

The fourth proportional to 6,389.14, 8,816.79 and 3,556.42 is: 4,907.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.14 : 8,816.79 = 3,556.42 : x
  2. Step 2: Convert to fraction form
    6,389.14/8,816.79 = 3,556.42/x
  3. Step 3: Cross multiply
    6,389.14x = 8,816.79 × 3,556.42
  4. Step 4: Simplify right side
    6,389.14x = 31,356,208.29
  5. Step 5: Solve for x
    x = 31,356,208.29/6,389.14
  6. Step 6: Final answer
    x = 4,907.74

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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.