Home / 8,129.81-11,219.15-4,403.81

Finding the Fourth Proportional to 8,129.81, 11,219.15 and 4,403.81

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Solution

The fourth proportional to 8,129.81, 11,219.15 and 4,403.81 is: 6,077.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.81 : 11,219.15 = 4,403.81 : x
  2. Step 2: Convert to fraction form
    8,129.81/11,219.15 = 4,403.81/x
  3. Step 3: Cross multiply
    8,129.81x = 11,219.15 × 4,403.81
  4. Step 4: Simplify right side
    8,129.81x = 49,407,010.99
  5. Step 5: Solve for x
    x = 49,407,010.99/8,129.81
  6. Step 6: Final answer
    x = 6,077.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.