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Finding the Fourth Proportional to 7,790.63, 10,765.13 and 5,548.62

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Solution

The fourth proportional to 7,790.63, 10,765.13 and 5,548.62 is: 7,667.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.63 : 10,765.13 = 5,548.62 : x
  2. Step 2: Convert to fraction form
    7,790.63/10,765.13 = 5,548.62/x
  3. Step 3: Cross multiply
    7,790.63x = 10,765.13 × 5,548.62
  4. Step 4: Simplify right side
    7,790.63x = 59,731,615.62
  5. Step 5: Solve for x
    x = 59,731,615.62/7,790.63
  6. Step 6: Final answer
    x = 7,667.11

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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.