Home / 9,891.05-13,649.96-5,415.22

Finding the Fourth Proportional to 9,891.05, 13,649.96 and 5,415.22

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Solution

The fourth proportional to 9,891.05, 13,649.96 and 5,415.22 is: 7,473.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891.05 : 13,649.96 = 5,415.22 : x
  2. Step 2: Convert to fraction form
    9,891.05/13,649.96 = 5,415.22/x
  3. Step 3: Cross multiply
    9,891.05x = 13,649.96 × 5,415.22
  4. Step 4: Simplify right side
    9,891.05x = 73,917,471.33
  5. Step 5: Solve for x
    x = 73,917,471.33/9,891.05
  6. Step 6: Final answer
    x = 7,473.17

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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.