Home / 5,636.63-7,776.80-3,399.21

Finding the Fourth Proportional to 5,636.63, 7,776.80 and 3,399.21

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Solution

The fourth proportional to 5,636.63, 7,776.80 and 3,399.21 is: 4,689.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.63 : 7,776.80 = 3,399.21 : x
  2. Step 2: Convert to fraction form
    5,636.63/7,776.80 = 3,399.21/x
  3. Step 3: Cross multiply
    5,636.63x = 7,776.80 × 3,399.21
  4. Step 4: Simplify right side
    5,636.63x = 26,434,976.33
  5. Step 5: Solve for x
    x = 26,434,976.33/5,636.63
  6. Step 6: Final answer
    x = 4,689.85

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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.