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Finding the Fourth Proportional to 5,662.95, 7,811.80 and 3,615.03

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Solution

The fourth proportional to 5,662.95, 7,811.80 and 3,615.03 is: 4,986.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,662.95 : 7,811.80 = 3,615.03 : x
  2. Step 2: Convert to fraction form
    5,662.95/7,811.80 = 3,615.03/x
  3. Step 3: Cross multiply
    5,662.95x = 7,811.80 × 3,615.03
  4. Step 4: Simplify right side
    5,662.95x = 28,239,882.32
  5. Step 5: Solve for x
    x = 28,239,882.32/5,662.95
  6. Step 6: Final answer
    x = 4,986.78

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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.