Home / 10,478.69-15,720.39-3,083.75

Finding the Fourth Proportional to 10,478.69, 15,720.39 and 3,083.75

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Solution

The fourth proportional to 10,478.69, 15,720.39 and 3,083.75 is: 4,626.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.69 : 15,720.39 = 3,083.75 : x
  2. Step 2: Convert to fraction form
    10,478.69/15,720.39 = 3,083.75/x
  3. Step 3: Cross multiply
    10,478.69x = 15,720.39 × 3,083.75
  4. Step 4: Simplify right side
    10,478.69x = 48,477,752.66
  5. Step 5: Solve for x
    x = 48,477,752.66/10,478.69
  6. Step 6: Final answer
    x = 4,626.32

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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.