Home / 5,187.88-7,781.82-3,547.56

Finding the Fourth Proportional to 5,187.88, 7,781.82 and 3,547.56

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Solution

The fourth proportional to 5,187.88, 7,781.82 and 3,547.56 is: 5,321.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.88 : 7,781.82 = 3,547.56 : x
  2. Step 2: Convert to fraction form
    5,187.88/7,781.82 = 3,547.56/x
  3. Step 3: Cross multiply
    5,187.88x = 7,781.82 × 3,547.56
  4. Step 4: Simplify right side
    5,187.88x = 27,606,473.36
  5. Step 5: Solve for x
    x = 27,606,473.36/5,187.88
  6. Step 6: Final answer
    x = 5,321.34

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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.