Home / 3,619.83-5,430.76-1,865.48

Finding the Fourth Proportional to 3,619.83, 5,430.76 and 1,865.48

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Solution

The fourth proportional to 3,619.83, 5,430.76 and 1,865.48 is: 2,798.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.83 : 5,430.76 = 1,865.48 : x
  2. Step 2: Convert to fraction form
    3,619.83/5,430.76 = 1,865.48/x
  3. Step 3: Cross multiply
    3,619.83x = 5,430.76 × 1,865.48
  4. Step 4: Simplify right side
    3,619.83x = 10,130,942.35
  5. Step 5: Solve for x
    x = 10,130,942.35/3,619.83
  6. Step 6: Final answer
    x = 2,798.73

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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.