Home / 3,679.93-5,519.52-1,215.15

Finding the Fourth Proportional to 3,679.93, 5,519.52 and 1,215.15

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Solution

The fourth proportional to 3,679.93, 5,519.52 and 1,215.15 is: 1,822.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.93 : 5,519.52 = 1,215.15 : x
  2. Step 2: Convert to fraction form
    3,679.93/5,519.52 = 1,215.15/x
  3. Step 3: Cross multiply
    3,679.93x = 5,519.52 × 1,215.15
  4. Step 4: Simplify right side
    3,679.93x = 6,707,051.66
  5. Step 5: Solve for x
    x = 6,707,051.66/3,679.93
  6. Step 6: Final answer
    x = 1,822.60

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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.