Home / 9,905.40-14,857.20-3,330.72

Finding the Fourth Proportional to 9,905.40, 14,857.20 and 3,330.72

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Solution

The fourth proportional to 9,905.40, 14,857.20 and 3,330.72 is: 4,995.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.40 : 14,857.20 = 3,330.72 : x
  2. Step 2: Convert to fraction form
    9,905.40/14,857.20 = 3,330.72/x
  3. Step 3: Cross multiply
    9,905.40x = 14,857.20 × 3,330.72
  4. Step 4: Simplify right side
    9,905.40x = 49,485,173.18
  5. Step 5: Solve for x
    x = 49,485,173.18/9,905.40
  6. Step 6: Final answer
    x = 4,995.78

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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.