Home / 4,435.20-6,653.76-2,128.64

Finding the Fourth Proportional to 4,435.20, 6,653.76 and 2,128.64

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Solution

The fourth proportional to 4,435.20, 6,653.76 and 2,128.64 is: 3,193.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,435.20 : 6,653.76 = 2,128.64 : x
  2. Step 2: Convert to fraction form
    4,435.20/6,653.76 = 2,128.64/x
  3. Step 3: Cross multiply
    4,435.20x = 6,653.76 × 2,128.64
  4. Step 4: Simplify right side
    4,435.20x = 14,163,459.69
  5. Step 5: Solve for x
    x = 14,163,459.69/4,435.20
  6. Step 6: Final answer
    x = 3,193.42

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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.