Home / 2,079.89-3,119.80-619.06

Finding the Fourth Proportional to 2,079.89, 3,119.80 and 619.06

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Solution

The fourth proportional to 2,079.89, 3,119.80 and 619.06 is: 928.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.89 : 3,119.80 = 619.06 : x
  2. Step 2: Convert to fraction form
    2,079.89/3,119.80 = 619.06/x
  3. Step 3: Cross multiply
    2,079.89x = 3,119.80 × 619.06
  4. Step 4: Simplify right side
    2,079.89x = 1,931,324.69
  5. Step 5: Solve for x
    x = 1,931,324.69/2,079.89
  6. Step 6: Final answer
    x = 928.57

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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.