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Finding the Fourth Proportional to 5,775.81, 8,662.14 and 1,615.56

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Solution

The fourth proportional to 5,775.81, 8,662.14 and 1,615.56 is: 2,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,775.81 : 8,662.14 = 1,615.56 : x
  2. Step 2: Convert to fraction form
    5,775.81/8,662.14 = 1,615.56/x
  3. Step 3: Cross multiply
    5,775.81x = 8,662.14 × 1,615.56
  4. Step 4: Simplify right side
    5,775.81x = 13,994,206.90
  5. Step 5: Solve for x
    x = 13,994,206.90/5,775.81
  6. Step 6: Final answer
    x = 2,422.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.