Home / 1,615.68-2,421.99-1,219.75

Finding the Fourth Proportional to 1,615.68, 2,421.99 and 1,219.75

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Solution

The fourth proportional to 1,615.68, 2,421.99 and 1,219.75 is: 1,828.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.68 : 2,421.99 = 1,219.75 : x
  2. Step 2: Convert to fraction form
    1,615.68/2,421.99 = 1,219.75/x
  3. Step 3: Cross multiply
    1,615.68x = 2,421.99 × 1,219.75
  4. Step 4: Simplify right side
    1,615.68x = 2,954,222.30
  5. Step 5: Solve for x
    x = 2,954,222.30/1,615.68
  6. Step 6: Final answer
    x = 1,828.47

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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.