Home / 7,180.32-10,769.64-1,985.52

Finding the Fourth Proportional to 7,180.32, 10,769.64 and 1,985.52

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Solution

The fourth proportional to 7,180.32, 10,769.64 and 1,985.52 is: 2,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.32 : 10,769.64 = 1,985.52 : x
  2. Step 2: Convert to fraction form
    7,180.32/10,769.64 = 1,985.52/x
  3. Step 3: Cross multiply
    7,180.32x = 10,769.64 × 1,985.52
  4. Step 4: Simplify right side
    7,180.32x = 21,383,335.61
  5. Step 5: Solve for x
    x = 21,383,335.61/7,180.32
  6. Step 6: Final answer
    x = 2,978.05

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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.