Home / 1,673.30-2,311.10-1,112.80

Finding the Fourth Proportional to 1,673.30, 2,311.10 and 1,112.80

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Solution

The fourth proportional to 1,673.30, 2,311.10 and 1,112.80 is: 1,536.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.30 : 2,311.10 = 1,112.80 : x
  2. Step 2: Convert to fraction form
    1,673.30/2,311.10 = 1,112.80/x
  3. Step 3: Cross multiply
    1,673.30x = 2,311.10 × 1,112.80
  4. Step 4: Simplify right side
    1,673.30x = 2,571,792.08
  5. Step 5: Solve for x
    x = 2,571,792.08/1,673.30
  6. Step 6: Final answer
    x = 1,536.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.