Home / 6,389.16-8,816.94-3,556.50

Finding the Fourth Proportional to 6,389.16, 8,816.94 and 3,556.50

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Solution

The fourth proportional to 6,389.16, 8,816.94 and 3,556.50 is: 4,907.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.16 : 8,816.94 = 3,556.50 : x
  2. Step 2: Convert to fraction form
    6,389.16/8,816.94 = 3,556.50/x
  3. Step 3: Cross multiply
    6,389.16x = 8,816.94 × 3,556.50
  4. Step 4: Simplify right side
    6,389.16x = 31,357,447.11
  5. Step 5: Solve for x
    x = 31,357,447.11/6,389.16
  6. Step 6: Final answer
    x = 4,907.91

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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.