Home / 4,911.21-7,366.59-1,989.54

Finding the Fourth Proportional to 4,911.21, 7,366.59 and 1,989.54

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Solution

The fourth proportional to 4,911.21, 7,366.59 and 1,989.54 is: 2,984.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.21 : 7,366.59 = 1,989.54 : x
  2. Step 2: Convert to fraction form
    4,911.21/7,366.59 = 1,989.54/x
  3. Step 3: Cross multiply
    4,911.21x = 7,366.59 × 1,989.54
  4. Step 4: Simplify right side
    4,911.21x = 14,656,125.47
  5. Step 5: Solve for x
    x = 14,656,125.47/4,911.21
  6. Step 6: Final answer
    x = 2,984.22

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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.