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Finding the Fourth Proportional to 9,778.80, 14,668.20 and 3,625.20

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Solution

The fourth proportional to 9,778.80, 14,668.20 and 3,625.20 is: 5,437.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,778.80 : 14,668.20 = 3,625.20 : x
  2. Step 2: Convert to fraction form
    9,778.80/14,668.20 = 3,625.20/x
  3. Step 3: Cross multiply
    9,778.80x = 14,668.20 × 3,625.20
  4. Step 4: Simplify right side
    9,778.80x = 53,175,158.64
  5. Step 5: Solve for x
    x = 53,175,158.64/9,778.80
  6. Step 6: Final answer
    x = 5,437.80

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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.