Home / 1,615.54-2,418.99-1,328.26

Finding the Fourth Proportional to 1,615.54, 2,418.99 and 1,328.26

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Solution

The fourth proportional to 1,615.54, 2,418.99 and 1,328.26 is: 1,988.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.54 : 2,418.99 = 1,328.26 : x
  2. Step 2: Convert to fraction form
    1,615.54/2,418.99 = 1,328.26/x
  3. Step 3: Cross multiply
    1,615.54x = 2,418.99 × 1,328.26
  4. Step 4: Simplify right side
    1,615.54x = 3,213,047.66
  5. Step 5: Solve for x
    x = 3,213,047.66/1,615.54
  6. Step 6: Final answer
    x = 1,988.84

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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.