Home / 5,619.36-8,419.68-3,421.44

Finding the Fourth Proportional to 5,619.36, 8,419.68 and 3,421.44

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Solution

The fourth proportional to 5,619.36, 8,419.68 and 3,421.44 is: 5,126.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.36 : 8,419.68 = 3,421.44 : x
  2. Step 2: Convert to fraction form
    5,619.36/8,419.68 = 3,421.44/x
  3. Step 3: Cross multiply
    5,619.36x = 8,419.68 × 3,421.44
  4. Step 4: Simplify right side
    5,619.36x = 28,807,429.94
  5. Step 5: Solve for x
    x = 28,807,429.94/5,619.36
  6. Step 6: Final answer
    x = 5,126.46

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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.