Home / 1,988.83-2,983.25-1,370.69

Finding the Fourth Proportional to 1,988.83, 2,983.25 and 1,370.69

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Solution

The fourth proportional to 1,988.83, 2,983.25 and 1,370.69 is: 2,056.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.83 : 2,983.25 = 1,370.69 : x
  2. Step 2: Convert to fraction form
    1,988.83/2,983.25 = 1,370.69/x
  3. Step 3: Cross multiply
    1,988.83x = 2,983.25 × 1,370.69
  4. Step 4: Simplify right side
    1,988.83x = 4,089,110.94
  5. Step 5: Solve for x
    x = 4,089,110.94/1,988.83
  6. Step 6: Final answer
    x = 2,056.04

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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.