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Finding the Fourth Proportional to 9,900.15, 14,847.96 and 2,880.15

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Solution

The fourth proportional to 9,900.15, 14,847.96 and 2,880.15 is: 4,319.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,900.15 : 14,847.96 = 2,880.15 : x
  2. Step 2: Convert to fraction form
    9,900.15/14,847.96 = 2,880.15/x
  3. Step 3: Cross multiply
    9,900.15x = 14,847.96 × 2,880.15
  4. Step 4: Simplify right side
    9,900.15x = 42,764,351.99
  5. Step 5: Solve for x
    x = 42,764,351.99/9,900.15
  6. Step 6: Final answer
    x = 4,319.57

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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.