Home / 6,401.80-9,603.85-1,959.38

Finding the Fourth Proportional to 6,401.80, 9,603.85 and 1,959.38

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Solution

The fourth proportional to 6,401.80, 9,603.85 and 1,959.38 is: 2,939.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,401.80 : 9,603.85 = 1,959.38 : x
  2. Step 2: Convert to fraction form
    6,401.80/9,603.85 = 1,959.38/x
  3. Step 3: Cross multiply
    6,401.80x = 9,603.85 × 1,959.38
  4. Step 4: Simplify right side
    6,401.80x = 18,817,638.67
  5. Step 5: Solve for x
    x = 18,817,638.67/6,401.80
  6. Step 6: Final answer
    x = 2,939.43

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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.