Home / 2,685.36-4,028.28-1,042.32

Finding the Fourth Proportional to 2,685.36, 4,028.28 and 1,042.32

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Solution

The fourth proportional to 2,685.36, 4,028.28 and 1,042.32 is: 1,563.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.36 : 4,028.28 = 1,042.32 : x
  2. Step 2: Convert to fraction form
    2,685.36/4,028.28 = 1,042.32/x
  3. Step 3: Cross multiply
    2,685.36x = 4,028.28 × 1,042.32
  4. Step 4: Simplify right side
    2,685.36x = 4,198,756.81
  5. Step 5: Solve for x
    x = 4,198,756.81/2,685.36
  6. Step 6: Final answer
    x = 1,563.57

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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.