Home / 1,820.21-2,730.33-1,089.99

Finding the Fourth Proportional to 1,820.21, 2,730.33 and 1,089.99

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Solution

The fourth proportional to 1,820.21, 2,730.33 and 1,089.99 is: 1,635.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.21 : 2,730.33 = 1,089.99 : x
  2. Step 2: Convert to fraction form
    1,820.21/2,730.33 = 1,089.99/x
  3. Step 3: Cross multiply
    1,820.21x = 2,730.33 × 1,089.99
  4. Step 4: Simplify right side
    1,820.21x = 2,976,032.40
  5. Step 5: Solve for x
    x = 2,976,032.40/1,820.21
  6. Step 6: Final answer
    x = 1,635.00

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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.