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Finding the Fourth Proportional to 9,882.80, 14,825.40 and 3,307.20

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Solution

The fourth proportional to 9,882.80, 14,825.40 and 3,307.20 is: 4,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,882.80 : 14,825.40 = 3,307.20 : x
  2. Step 2: Convert to fraction form
    9,882.80/14,825.40 = 3,307.20/x
  3. Step 3: Cross multiply
    9,882.80x = 14,825.40 × 3,307.20
  4. Step 4: Simplify right side
    9,882.80x = 49,030,562.88
  5. Step 5: Solve for x
    x = 49,030,562.88/9,882.80
  6. Step 6: Final answer
    x = 4,961.20

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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.