Home / 5,619.87-8,430.02-2,109.53

Finding the Fourth Proportional to 5,619.87, 8,430.02 and 2,109.53

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Solution

The fourth proportional to 5,619.87, 8,430.02 and 2,109.53 is: 3,164.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.87 : 8,430.02 = 2,109.53 : x
  2. Step 2: Convert to fraction form
    5,619.87/8,430.02 = 2,109.53/x
  3. Step 3: Cross multiply
    5,619.87x = 8,430.02 × 2,109.53
  4. Step 4: Simplify right side
    5,619.87x = 17,783,327.39
  5. Step 5: Solve for x
    x = 17,783,327.39/5,619.87
  6. Step 6: Final answer
    x = 3,164.37

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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.