Home / 5,365.96-7,405.78-3,128.56

Finding the Fourth Proportional to 5,365.96, 7,405.78 and 3,128.56

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Solution

The fourth proportional to 5,365.96, 7,405.78 and 3,128.56 is: 4,317.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,365.96 : 7,405.78 = 3,128.56 : x
  2. Step 2: Convert to fraction form
    5,365.96/7,405.78 = 3,128.56/x
  3. Step 3: Cross multiply
    5,365.96x = 7,405.78 × 3,128.56
  4. Step 4: Simplify right side
    5,365.96x = 23,169,427.08
  5. Step 5: Solve for x
    x = 23,169,427.08/5,365.96
  6. Step 6: Final answer
    x = 4,317.85

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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.