Home / 7,452.20-11,178.28-1,905.54

Finding the Fourth Proportional to 7,452.20, 11,178.28 and 1,905.54

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Solution

The fourth proportional to 7,452.20, 11,178.28 and 1,905.54 is: 2,858.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,452.20 : 11,178.28 = 1,905.54 : x
  2. Step 2: Convert to fraction form
    7,452.20/11,178.28 = 1,905.54/x
  3. Step 3: Cross multiply
    7,452.20x = 11,178.28 × 1,905.54
  4. Step 4: Simplify right side
    7,452.20x = 21,300,659.67
  5. Step 5: Solve for x
    x = 21,300,659.67/7,452.20
  6. Step 6: Final answer
    x = 2,858.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.