Home / 1,819.84-2,730.88-1,089.60

Finding the Fourth Proportional to 1,819.84, 2,730.88 and 1,089.60

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Solution

The fourth proportional to 1,819.84, 2,730.88 and 1,089.60 is: 1,635.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.84 : 2,730.88 = 1,089.60 : x
  2. Step 2: Convert to fraction form
    1,819.84/2,730.88 = 1,089.60/x
  3. Step 3: Cross multiply
    1,819.84x = 2,730.88 × 1,089.60
  4. Step 4: Simplify right side
    1,819.84x = 2,975,566.85
  5. Step 5: Solve for x
    x = 2,975,566.85/1,819.84
  6. Step 6: Final answer
    x = 1,635.07

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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.