Home / 3,478.86-5,216.63-1,628.42

Finding the Fourth Proportional to 3,478.86, 5,216.63 and 1,628.42

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Solution

The fourth proportional to 3,478.86, 5,216.63 and 1,628.42 is: 2,441.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.86 : 5,216.63 = 1,628.42 : x
  2. Step 2: Convert to fraction form
    3,478.86/5,216.63 = 1,628.42/x
  3. Step 3: Cross multiply
    3,478.86x = 5,216.63 × 1,628.42
  4. Step 4: Simplify right side
    3,478.86x = 8,494,830.40
  5. Step 5: Solve for x
    x = 8,494,830.40/3,478.86
  6. Step 6: Final answer
    x = 2,441.84

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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.