Home / 5,689.40-8,519.70-4,220.60

Finding the Fourth Proportional to 5,689.40, 8,519.70 and 4,220.60

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Solution

The fourth proportional to 5,689.40, 8,519.70 and 4,220.60 is: 6,320.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,689.40 : 8,519.70 = 4,220.60 : x
  2. Step 2: Convert to fraction form
    5,689.40/8,519.70 = 4,220.60/x
  3. Step 3: Cross multiply
    5,689.40x = 8,519.70 × 4,220.60
  4. Step 4: Simplify right side
    5,689.40x = 35,958,245.82
  5. Step 5: Solve for x
    x = 35,958,245.82/5,689.40
  6. Step 6: Final answer
    x = 6,320.22

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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.