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Finding the Fourth Proportional to 9,771.80, 14,630.10 and 7,605.80

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Solution

The fourth proportional to 9,771.80, 14,630.10 and 7,605.80 is: 11,387.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,771.80 : 14,630.10 = 7,605.80 : x
  2. Step 2: Convert to fraction form
    9,771.80/14,630.10 = 7,605.80/x
  3. Step 3: Cross multiply
    9,771.80x = 14,630.10 × 7,605.80
  4. Step 4: Simplify right side
    9,771.80x = 111,273,614.58
  5. Step 5: Solve for x
    x = 111,273,614.58/9,771.80
  6. Step 6: Final answer
    x = 11,387.22

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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.