Home / 5,677.39-8,515.74-2,118.83

Finding the Fourth Proportional to 5,677.39, 8,515.74 and 2,118.83

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Solution

The fourth proportional to 5,677.39, 8,515.74 and 2,118.83 is: 3,178.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,677.39 : 8,515.74 = 2,118.83 : x
  2. Step 2: Convert to fraction form
    5,677.39/8,515.74 = 2,118.83/x
  3. Step 3: Cross multiply
    5,677.39x = 8,515.74 × 2,118.83
  4. Step 4: Simplify right side
    5,677.39x = 18,043,405.38
  5. Step 5: Solve for x
    x = 18,043,405.38/5,677.39
  6. Step 6: Final answer
    x = 3,178.12

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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.