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Finding the Fourth Proportional to 7,843.76, 10,824.60 and 4,440.50

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Solution

The fourth proportional to 7,843.76, 10,824.60 and 4,440.50 is: 6,128.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,843.76 : 10,824.60 = 4,440.50 : x
  2. Step 2: Convert to fraction form
    7,843.76/10,824.60 = 4,440.50/x
  3. Step 3: Cross multiply
    7,843.76x = 10,824.60 × 4,440.50
  4. Step 4: Simplify right side
    7,843.76x = 48,066,639.42
  5. Step 5: Solve for x
    x = 48,066,639.42/7,843.76
  6. Step 6: Final answer
    x = 6,128.01

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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.