Home / 5,115.99-7,636.64-4,390.23

Finding the Fourth Proportional to 5,115.99, 7,636.64 and 4,390.23

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Solution

The fourth proportional to 5,115.99, 7,636.64 and 4,390.23 is: 6,553.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.99 : 7,636.64 = 4,390.23 : x
  2. Step 2: Convert to fraction form
    5,115.99/7,636.64 = 4,390.23/x
  3. Step 3: Cross multiply
    5,115.99x = 7,636.64 × 4,390.23
  4. Step 4: Simplify right side
    5,115.99x = 33,526,606.03
  5. Step 5: Solve for x
    x = 33,526,606.03/5,115.99
  6. Step 6: Final answer
    x = 6,553.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.