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Finding the Fourth Proportional to 5,595.72, 7,722.20 and 3,078.07

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Solution

The fourth proportional to 5,595.72, 7,722.20 and 3,078.07 is: 4,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,595.72 : 7,722.20 = 3,078.07 : x
  2. Step 2: Convert to fraction form
    5,595.72/7,722.20 = 3,078.07/x
  3. Step 3: Cross multiply
    5,595.72x = 7,722.20 × 3,078.07
  4. Step 4: Simplify right side
    5,595.72x = 23,769,460.54
  5. Step 5: Solve for x
    x = 23,769,460.54/5,595.72
  6. Step 6: Final answer
    x = 4,247.80

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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.