Home / 7,769.82-10,722.60-4,412.78

Finding the Fourth Proportional to 7,769.82, 10,722.60 and 4,412.78

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Solution

The fourth proportional to 7,769.82, 10,722.60 and 4,412.78 is: 6,089.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.82 : 10,722.60 = 4,412.78 : x
  2. Step 2: Convert to fraction form
    7,769.82/10,722.60 = 4,412.78/x
  3. Step 3: Cross multiply
    7,769.82x = 10,722.60 × 4,412.78
  4. Step 4: Simplify right side
    7,769.82x = 47,316,474.83
  5. Step 5: Solve for x
    x = 47,316,474.83/7,769.82
  6. Step 6: Final answer
    x = 6,089.78

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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.