Home / 6,428.19-9,638.10-2,729.40

Finding the Fourth Proportional to 6,428.19, 9,638.10 and 2,729.40

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Solution

The fourth proportional to 6,428.19, 9,638.10 and 2,729.40 is: 4,092.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.19 : 9,638.10 = 2,729.40 : x
  2. Step 2: Convert to fraction form
    6,428.19/9,638.10 = 2,729.40/x
  3. Step 3: Cross multiply
    6,428.19x = 9,638.10 × 2,729.40
  4. Step 4: Simplify right side
    6,428.19x = 26,306,230.14
  5. Step 5: Solve for x
    x = 26,306,230.14/6,428.19
  6. Step 6: Final answer
    x = 4,092.32

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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.