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Finding the Fourth Proportional to 5,720.99, 7,890.87 and 3,483

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Solution

The fourth proportional to 5,720.99, 7,890.87 and 3,483 is: 4,804.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720.99 : 7,890.87 = 3,483 : x
  2. Step 2: Convert to fraction form
    5,720.99/7,890.87 = 3,483/x
  3. Step 3: Cross multiply
    5,720.99x = 7,890.87 × 3,483
  4. Step 4: Simplify right side
    5,720.99x = 27,483,913.27
  5. Step 5: Solve for x
    x = 27,483,913.27/5,720.99
  6. Step 6: Final answer
    x = 4,804.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.