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Finding the Fourth Proportional to 3,620.00, 5,430.72 and 1,539.99

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Solution

The fourth proportional to 3,620.00, 5,430.72 and 1,539.99 is: 2,310.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.00 : 5,430.72 = 1,539.99 : x
  2. Step 2: Convert to fraction form
    3,620.00/5,430.72 = 1,539.99/x
  3. Step 3: Cross multiply
    3,620.00x = 5,430.72 × 1,539.99
  4. Step 4: Simplify right side
    3,620.00x = 8,363,254.49
  5. Step 5: Solve for x
    x = 8,363,254.49/3,620.00
  6. Step 6: Final answer
    x = 2,310.29

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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.