Home / 2,792.90-4,189.46-1,148.40

Finding the Fourth Proportional to 2,792.90, 4,189.46 and 1,148.40

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Solution

The fourth proportional to 2,792.90, 4,189.46 and 1,148.40 is: 1,722.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.90 : 4,189.46 = 1,148.40 : x
  2. Step 2: Convert to fraction form
    2,792.90/4,189.46 = 1,148.40/x
  3. Step 3: Cross multiply
    2,792.90x = 4,189.46 × 1,148.40
  4. Step 4: Simplify right side
    2,792.90x = 4,811,170.12
  5. Step 5: Solve for x
    x = 4,811,170.12/2,792.90
  6. Step 6: Final answer
    x = 1,722.64

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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.