Home / 5,118.58-7,677.55-1,786.60

Finding the Fourth Proportional to 5,118.58, 7,677.55 and 1,786.60

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Solution

The fourth proportional to 5,118.58, 7,677.55 and 1,786.60 is: 2,679.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.58 : 7,677.55 = 1,786.60 : x
  2. Step 2: Convert to fraction form
    5,118.58/7,677.55 = 1,786.60/x
  3. Step 3: Cross multiply
    5,118.58x = 7,677.55 × 1,786.60
  4. Step 4: Simplify right side
    5,118.58x = 13,716,663.51
  5. Step 5: Solve for x
    x = 13,716,663.51/5,118.58
  6. Step 6: Final answer
    x = 2,679.78

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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.