Home / 1,365.20-2,042.46-1,165.02

Finding the Fourth Proportional to 1,365.20, 2,042.46 and 1,165.02

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Solution

The fourth proportional to 1,365.20, 2,042.46 and 1,165.02 is: 1,742.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.20 : 2,042.46 = 1,165.02 : x
  2. Step 2: Convert to fraction form
    1,365.20/2,042.46 = 1,165.02/x
  3. Step 3: Cross multiply
    1,365.20x = 2,042.46 × 1,165.02
  4. Step 4: Simplify right side
    1,365.20x = 2,379,506.75
  5. Step 5: Solve for x
    x = 2,379,506.75/1,365.20
  6. Step 6: Final answer
    x = 1,742.98

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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.