Home / 2,389.74-3,584.60-1,415.32

Finding the Fourth Proportional to 2,389.74, 3,584.60 and 1,415.32

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Solution

The fourth proportional to 2,389.74, 3,584.60 and 1,415.32 is: 2,122.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.74 : 3,584.60 = 1,415.32 : x
  2. Step 2: Convert to fraction form
    2,389.74/3,584.60 = 1,415.32/x
  3. Step 3: Cross multiply
    2,389.74x = 3,584.60 × 1,415.32
  4. Step 4: Simplify right side
    2,389.74x = 5,073,356.07
  5. Step 5: Solve for x
    x = 5,073,356.07/2,389.74
  6. Step 6: Final answer
    x = 2,122.97

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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.