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Finding the Fourth Proportional to 7,989.64, 11,025.21 and 4,453

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Solution

The fourth proportional to 7,989.64, 11,025.21 and 4,453 is: 6,144.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.64 : 11,025.21 = 4,453 : x
  2. Step 2: Convert to fraction form
    7,989.64/11,025.21 = 4,453/x
  3. Step 3: Cross multiply
    7,989.64x = 11,025.21 × 4,453
  4. Step 4: Simplify right side
    7,989.64x = 49,095,260.13
  5. Step 5: Solve for x
    x = 49,095,260.13/7,989.64
  6. Step 6: Final answer
    x = 6,144.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.