Home / 5,619.76-7,750.56-4,109.20

Finding the Fourth Proportional to 5,619.76, 7,750.56 and 4,109.20

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Solution

The fourth proportional to 5,619.76, 7,750.56 and 4,109.20 is: 5,667.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.76 : 7,750.56 = 4,109.20 : x
  2. Step 2: Convert to fraction form
    5,619.76/7,750.56 = 4,109.20/x
  3. Step 3: Cross multiply
    5,619.76x = 7,750.56 × 4,109.20
  4. Step 4: Simplify right side
    5,619.76x = 31,848,601.15
  5. Step 5: Solve for x
    x = 31,848,601.15/5,619.76
  6. Step 6: Final answer
    x = 5,667.25

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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.