Home / 1,821.80-2,730.30-1,355.93

Finding the Fourth Proportional to 1,821.80, 2,730.30 and 1,355.93

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Solution

The fourth proportional to 1,821.80, 2,730.30 and 1,355.93 is: 2,032.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.80 : 2,730.30 = 1,355.93 : x
  2. Step 2: Convert to fraction form
    1,821.80/2,730.30 = 1,355.93/x
  3. Step 3: Cross multiply
    1,821.80x = 2,730.30 × 1,355.93
  4. Step 4: Simplify right side
    1,821.80x = 3,702,095.68
  5. Step 5: Solve for x
    x = 3,702,095.68/1,821.80
  6. Step 6: Final answer
    x = 2,032.11

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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.