Home / 2,619.54-3,615.02-1,440.68

Finding the Fourth Proportional to 2,619.54, 3,615.02 and 1,440.68

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Solution

The fourth proportional to 2,619.54, 3,615.02 and 1,440.68 is: 1,988.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.54 : 3,615.02 = 1,440.68 : x
  2. Step 2: Convert to fraction form
    2,619.54/3,615.02 = 1,440.68/x
  3. Step 3: Cross multiply
    2,619.54x = 3,615.02 × 1,440.68
  4. Step 4: Simplify right side
    2,619.54x = 5,208,061.74
  5. Step 5: Solve for x
    x = 5,208,061.74/2,619.54
  6. Step 6: Final answer
    x = 1,988.16

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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.