Home / 7,619.50-11,430.69-3,515.50

Finding the Fourth Proportional to 7,619.50, 11,430.69 and 3,515.50

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Solution

The fourth proportional to 7,619.50, 11,430.69 and 3,515.50 is: 5,273.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.50 : 11,430.69 = 3,515.50 : x
  2. Step 2: Convert to fraction form
    7,619.50/11,430.69 = 3,515.50/x
  3. Step 3: Cross multiply
    7,619.50x = 11,430.69 × 3,515.50
  4. Step 4: Simplify right side
    7,619.50x = 40,184,590.70
  5. Step 5: Solve for x
    x = 40,184,590.70/7,619.50
  6. Step 6: Final answer
    x = 5,273.91

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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.