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Finding the Fourth Proportional to 3,603.69, 5,402.70 and 1,521.99

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Solution

The fourth proportional to 3,603.69, 5,402.70 and 1,521.99 is: 2,281.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.69 : 5,402.70 = 1,521.99 : x
  2. Step 2: Convert to fraction form
    3,603.69/5,402.70 = 1,521.99/x
  3. Step 3: Cross multiply
    3,603.69x = 5,402.70 × 1,521.99
  4. Step 4: Simplify right side
    3,603.69x = 8,222,855.37
  5. Step 5: Solve for x
    x = 8,222,855.37/3,603.69
  6. Step 6: Final answer
    x = 2,281.79

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1.5x scale

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.