Home / 5,618.12-7,748.34-4,218.44

Finding the Fourth Proportional to 5,618.12, 7,748.34 and 4,218.44

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Solution

The fourth proportional to 5,618.12, 7,748.34 and 4,218.44 is: 5,817.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.12 : 7,748.34 = 4,218.44 : x
  2. Step 2: Convert to fraction form
    5,618.12/7,748.34 = 4,218.44/x
  3. Step 3: Cross multiply
    5,618.12x = 7,748.34 × 4,218.44
  4. Step 4: Simplify right side
    5,618.12x = 32,685,907.39
  5. Step 5: Solve for x
    x = 32,685,907.39/5,618.12
  6. Step 6: Final answer
    x = 5,817.94

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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.