Home / 9,189.78-13,775.86-2,945.76

Finding the Fourth Proportional to 9,189.78, 13,775.86 and 2,945.76

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Solution

The fourth proportional to 9,189.78, 13,775.86 and 2,945.76 is: 4,415.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.78 : 13,775.86 = 2,945.76 : x
  2. Step 2: Convert to fraction form
    9,189.78/13,775.86 = 2,945.76/x
  3. Step 3: Cross multiply
    9,189.78x = 13,775.86 × 2,945.76
  4. Step 4: Simplify right side
    9,189.78x = 40,580,377.35
  5. Step 5: Solve for x
    x = 40,580,377.35/9,189.78
  6. Step 6: Final answer
    x = 4,415.82

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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.