Home / 6,421.68-8,858.37-5,227.95

Finding the Fourth Proportional to 6,421.68, 8,858.37 and 5,227.95

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Solution

The fourth proportional to 6,421.68, 8,858.37 and 5,227.95 is: 7,211.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.68 : 8,858.37 = 5,227.95 : x
  2. Step 2: Convert to fraction form
    6,421.68/8,858.37 = 5,227.95/x
  3. Step 3: Cross multiply
    6,421.68x = 8,858.37 × 5,227.95
  4. Step 4: Simplify right side
    6,421.68x = 46,311,115.44
  5. Step 5: Solve for x
    x = 46,311,115.44/6,421.68
  6. Step 6: Final answer
    x = 7,211.68

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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.