Home / 3,126.40-4,314.12-1,729.06

Finding the Fourth Proportional to 3,126.40, 4,314.12 and 1,729.06

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Solution

The fourth proportional to 3,126.40, 4,314.12 and 1,729.06 is: 2,385.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.40 : 4,314.12 = 1,729.06 : x
  2. Step 2: Convert to fraction form
    3,126.40/4,314.12 = 1,729.06/x
  3. Step 3: Cross multiply
    3,126.40x = 4,314.12 × 1,729.06
  4. Step 4: Simplify right side
    3,126.40x = 7,459,372.33
  5. Step 5: Solve for x
    x = 7,459,372.33/3,126.40
  6. Step 6: Final answer
    x = 2,385.93

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