Home / 2,681.10-4,021.56-1,219.20

Finding the Fourth Proportional to 2,681.10, 4,021.56 and 1,219.20

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Solution

The fourth proportional to 2,681.10, 4,021.56 and 1,219.20 is: 1,828.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.10 : 4,021.56 = 1,219.20 : x
  2. Step 2: Convert to fraction form
    2,681.10/4,021.56 = 1,219.20/x
  3. Step 3: Cross multiply
    2,681.10x = 4,021.56 × 1,219.20
  4. Step 4: Simplify right side
    2,681.10x = 4,903,085.95
  5. Step 5: Solve for x
    x = 4,903,085.95/2,681.10
  6. Step 6: Final answer
    x = 1,828.76

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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.