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Finding the Fourth Proportional to 3,603.79, 5,395.95 and 1,868.77

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Solution

The fourth proportional to 3,603.79, 5,395.95 and 1,868.77 is: 2,798.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.79 : 5,395.95 = 1,868.77 : x
  2. Step 2: Convert to fraction form
    3,603.79/5,395.95 = 1,868.77/x
  3. Step 3: Cross multiply
    3,603.79x = 5,395.95 × 1,868.77
  4. Step 4: Simplify right side
    3,603.79x = 10,083,789.48
  5. Step 5: Solve for x
    x = 10,083,789.48/3,603.79
  6. Step 6: Final answer
    x = 2,798.11

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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.