Home / 1,821.80-2,733.60-1,042.40

Finding the Fourth Proportional to 1,821.80, 2,733.60 and 1,042.40

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Solution

The fourth proportional to 1,821.80, 2,733.60 and 1,042.40 is: 1,564.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.80 : 2,733.60 = 1,042.40 : x
  2. Step 2: Convert to fraction form
    1,821.80/2,733.60 = 1,042.40/x
  3. Step 3: Cross multiply
    1,821.80x = 2,733.60 × 1,042.40
  4. Step 4: Simplify right side
    1,821.80x = 2,849,504.64
  5. Step 5: Solve for x
    x = 2,849,504.64/1,821.80
  6. Step 6: Final answer
    x = 1,564.11

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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.