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Finding the Fourth Proportional to 7,699.76, 10,621.20 and 4,555.34

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Solution

The fourth proportional to 7,699.76, 10,621.20 and 4,555.34 is: 6,283.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,699.76 : 10,621.20 = 4,555.34 : x
  2. Step 2: Convert to fraction form
    7,699.76/10,621.20 = 4,555.34/x
  3. Step 3: Cross multiply
    7,699.76x = 10,621.20 × 4,555.34
  4. Step 4: Simplify right side
    7,699.76x = 48,383,177.21
  5. Step 5: Solve for x
    x = 48,383,177.21/7,699.76
  6. Step 6: Final answer
    x = 6,283.73

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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.