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Finding the Fourth Proportional to 2,999.68, 4,139.60 and 1,673.44

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Solution

The fourth proportional to 2,999.68, 4,139.60 and 1,673.44 is: 2,309.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.68 : 4,139.60 = 1,673.44 : x
  2. Step 2: Convert to fraction form
    2,999.68/4,139.60 = 1,673.44/x
  3. Step 3: Cross multiply
    2,999.68x = 4,139.60 × 1,673.44
  4. Step 4: Simplify right side
    2,999.68x = 6,927,372.22
  5. Step 5: Solve for x
    x = 6,927,372.22/2,999.68
  6. Step 6: Final answer
    x = 2,309.37

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1.5x scale

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.