Home / 2,729.60-4,091.84-1,342.40

Finding the Fourth Proportional to 2,729.60, 4,091.84 and 1,342.40

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Solution

The fourth proportional to 2,729.60, 4,091.84 and 1,342.40 is: 2,012.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,729.60 : 4,091.84 = 1,342.40 : x
  2. Step 2: Convert to fraction form
    2,729.60/4,091.84 = 1,342.40/x
  3. Step 3: Cross multiply
    2,729.60x = 4,091.84 × 1,342.40
  4. Step 4: Simplify right side
    2,729.60x = 5,492,886.02
  5. Step 5: Solve for x
    x = 5,492,886.02/2,729.60
  6. Step 6: Final answer
    x = 2,012.34

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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.