Home / 5,615.10-8,420.18-2,102.64

Finding the Fourth Proportional to 5,615.10, 8,420.18 and 2,102.64

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Solution

The fourth proportional to 5,615.10, 8,420.18 and 2,102.64 is: 3,153.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.10 : 8,420.18 = 2,102.64 : x
  2. Step 2: Convert to fraction form
    5,615.10/8,420.18 = 2,102.64/x
  3. Step 3: Cross multiply
    5,615.10x = 8,420.18 × 2,102.64
  4. Step 4: Simplify right side
    5,615.10x = 17,704,633.58
  5. Step 5: Solve for x
    x = 17,704,633.58/5,615.10
  6. Step 6: Final answer
    x = 3,153.04

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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.