Home / 5,399.39-8,089.77-4,215.80

Finding the Fourth Proportional to 5,399.39, 8,089.77 and 4,215.80

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Solution

The fourth proportional to 5,399.39, 8,089.77 and 4,215.80 is: 6,316.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,399.39 : 8,089.77 = 4,215.80 : x
  2. Step 2: Convert to fraction form
    5,399.39/8,089.77 = 4,215.80/x
  3. Step 3: Cross multiply
    5,399.39x = 8,089.77 × 4,215.80
  4. Step 4: Simplify right side
    5,399.39x = 34,104,852.37
  5. Step 5: Solve for x
    x = 34,104,852.37/5,399.39
  6. Step 6: Final answer
    x = 6,316.43

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1.5x scale

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.