Home / 2,619.63-3,615.03-1,440.68

Finding the Fourth Proportional to 2,619.63, 3,615.03 and 1,440.68

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Solution

The fourth proportional to 2,619.63, 3,615.03 and 1,440.68 is: 1,988.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.63 : 3,615.03 = 1,440.68 : x
  2. Step 2: Convert to fraction form
    2,619.63/3,615.03 = 1,440.68/x
  3. Step 3: Cross multiply
    2,619.63x = 3,615.03 × 1,440.68
  4. Step 4: Simplify right side
    2,619.63x = 5,208,083.35
  5. Step 5: Solve for x
    x = 5,208,083.35/2,619.63
  6. Step 6: Final answer
    x = 1,988.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.