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Finding the Fourth Proportional to 2,705.88, 4,051.53 and 1,729.02

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Solution

The fourth proportional to 2,705.88, 4,051.53 and 1,729.02 is: 2,588.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.88 : 4,051.53 = 1,729.02 : x
  2. Step 2: Convert to fraction form
    2,705.88/4,051.53 = 1,729.02/x
  3. Step 3: Cross multiply
    2,705.88x = 4,051.53 × 1,729.02
  4. Step 4: Simplify right side
    2,705.88x = 7,005,176.40
  5. Step 5: Solve for x
    x = 7,005,176.40/2,705.88
  6. Step 6: Final answer
    x = 2,588.87

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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.