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Finding the Fourth Proportional to 7,698.05, 10,621.34 and 4,712.79

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Solution

The fourth proportional to 7,698.05, 10,621.34 and 4,712.79 is: 6,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,698.05 : 10,621.34 = 4,712.79 : x
  2. Step 2: Convert to fraction form
    7,698.05/10,621.34 = 4,712.79/x
  3. Step 3: Cross multiply
    7,698.05x = 10,621.34 × 4,712.79
  4. Step 4: Simplify right side
    7,698.05x = 50,056,144.94
  5. Step 5: Solve for x
    x = 50,056,144.94/7,698.05
  6. Step 6: Final answer
    x = 6,502.45

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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.