Home / 5,530.80-8,271.90-4,218.60

Finding the Fourth Proportional to 5,530.80, 8,271.90 and 4,218.60

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Solution

The fourth proportional to 5,530.80, 8,271.90 and 4,218.60 is: 6,309.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,530.80 : 8,271.90 = 4,218.60 : x
  2. Step 2: Convert to fraction form
    5,530.80/8,271.90 = 4,218.60/x
  3. Step 3: Cross multiply
    5,530.80x = 8,271.90 × 4,218.60
  4. Step 4: Simplify right side
    5,530.80x = 34,895,837.34
  5. Step 5: Solve for x
    x = 34,895,837.34/5,530.80
  6. Step 6: Final answer
    x = 6,309.37

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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.