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Finding the Fourth Proportional to 7,392.80, 11,086.80 and 2,461.60

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Solution

The fourth proportional to 7,392.80, 11,086.80 and 2,461.60 is: 3,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,392.80 : 11,086.80 = 2,461.60 : x
  2. Step 2: Convert to fraction form
    7,392.80/11,086.80 = 2,461.60/x
  3. Step 3: Cross multiply
    7,392.80x = 11,086.80 × 2,461.60
  4. Step 4: Simplify right side
    7,392.80x = 27,291,266.88
  5. Step 5: Solve for x
    x = 27,291,266.88/7,392.80
  6. Step 6: Final answer
    x = 3,691.60

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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.