Home / 7,921.77-11,886.60-3,538.05

Finding the Fourth Proportional to 7,921.77, 11,886.60 and 3,538.05

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Solution

The fourth proportional to 7,921.77, 11,886.60 and 3,538.05 is: 5,308.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.77 : 11,886.60 = 3,538.05 : x
  2. Step 2: Convert to fraction form
    7,921.77/11,886.60 = 3,538.05/x
  3. Step 3: Cross multiply
    7,921.77x = 11,886.60 × 3,538.05
  4. Step 4: Simplify right side
    7,921.77x = 42,055,385.13
  5. Step 5: Solve for x
    x = 42,055,385.13/7,921.77
  6. Step 6: Final answer
    x = 5,308.84

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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.