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Finding the Fourth Proportional to 2,999.52, 4,139.04 and 1,672.80

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Solution

The fourth proportional to 2,999.52, 4,139.04 and 1,672.80 is: 2,308.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.52 : 4,139.04 = 1,672.80 : x
  2. Step 2: Convert to fraction form
    2,999.52/4,139.04 = 1,672.80/x
  3. Step 3: Cross multiply
    2,999.52x = 4,139.04 × 1,672.80
  4. Step 4: Simplify right side
    2,999.52x = 6,923,786.11
  5. Step 5: Solve for x
    x = 6,923,786.11/2,999.52
  6. Step 6: Final answer
    x = 2,308.30

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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.