Home / 8,181.81-11,289.16-5,659.87

Finding the Fourth Proportional to 8,181.81, 11,289.16 and 5,659.87

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Solution

The fourth proportional to 8,181.81, 11,289.16 and 5,659.87 is: 7,809.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.81 : 11,289.16 = 5,659.87 : x
  2. Step 2: Convert to fraction form
    8,181.81/11,289.16 = 5,659.87/x
  3. Step 3: Cross multiply
    8,181.81x = 11,289.16 × 5,659.87
  4. Step 4: Simplify right side
    8,181.81x = 63,895,149.71
  5. Step 5: Solve for x
    x = 63,895,149.71/8,181.81
  6. Step 6: Final answer
    x = 7,809.42

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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.