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Finding the Fourth Proportional to 1,401.07, 2,103.07 and 1,369.70

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Solution

The fourth proportional to 1,401.07, 2,103.07 and 1,369.70 is: 2,055.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.07 : 2,103.07 = 1,369.70 : x
  2. Step 2: Convert to fraction form
    1,401.07/2,103.07 = 1,369.70/x
  3. Step 3: Cross multiply
    1,401.07x = 2,103.07 × 1,369.70
  4. Step 4: Simplify right side
    1,401.07x = 2,880,574.98
  5. Step 5: Solve for x
    x = 2,880,574.98/1,401.07
  6. Step 6: Final answer
    x = 2,055.98

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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.