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Finding the Fourth Proportional to 7,620.66, 10,516.81 and 4,476.82

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Solution

The fourth proportional to 7,620.66, 10,516.81 and 4,476.82 is: 6,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.66 : 10,516.81 = 4,476.82 : x
  2. Step 2: Convert to fraction form
    7,620.66/10,516.81 = 4,476.82/x
  3. Step 3: Cross multiply
    7,620.66x = 10,516.81 × 4,476.82
  4. Step 4: Simplify right side
    7,620.66x = 47,081,865.34
  5. Step 5: Solve for x
    x = 47,081,865.34/7,620.66
  6. Step 6: Final answer
    x = 6,178.19

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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.