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Finding the Fourth Proportional to 6,599.80, 9,107.60 and 3,615.60

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Solution

The fourth proportional to 6,599.80, 9,107.60 and 3,615.60 is: 4,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,599.80 : 9,107.60 = 3,615.60 : x
  2. Step 2: Convert to fraction form
    6,599.80/9,107.60 = 3,615.60/x
  3. Step 3: Cross multiply
    6,599.80x = 9,107.60 × 3,615.60
  4. Step 4: Simplify right side
    6,599.80x = 32,929,438.56
  5. Step 5: Solve for x
    x = 32,929,438.56/6,599.80
  6. Step 6: Final answer
    x = 4,989.46

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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.