Home / 5,203.81-7,181.36-3,109.15

Finding the Fourth Proportional to 5,203.81, 7,181.36 and 3,109.15

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Solution

The fourth proportional to 5,203.81, 7,181.36 and 3,109.15 is: 4,290.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,203.81 : 7,181.36 = 3,109.15 : x
  2. Step 2: Convert to fraction form
    5,203.81/7,181.36 = 3,109.15/x
  3. Step 3: Cross multiply
    5,203.81x = 7,181.36 × 3,109.15
  4. Step 4: Simplify right side
    5,203.81x = 22,327,925.44
  5. Step 5: Solve for x
    x = 22,327,925.44/5,203.81
  6. Step 6: Final answer
    x = 4,290.69

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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.