Home / 5,720.21-8,579.12-1,615.25

Finding the Fourth Proportional to 5,720.21, 8,579.12 and 1,615.25

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Solution

The fourth proportional to 5,720.21, 8,579.12 and 1,615.25 is: 2,422.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720.21 : 8,579.12 = 1,615.25 : x
  2. Step 2: Convert to fraction form
    5,720.21/8,579.12 = 1,615.25/x
  3. Step 3: Cross multiply
    5,720.21x = 8,579.12 × 1,615.25
  4. Step 4: Simplify right side
    5,720.21x = 13,857,415.50
  5. Step 5: Solve for x
    x = 13,857,415.50/5,720.21
  6. Step 6: Final answer
    x = 2,422.54

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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.