Home / 3,681.11-5,520.49-1,215.47

Finding the Fourth Proportional to 3,681.11, 5,520.49 and 1,215.47

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Solution

The fourth proportional to 3,681.11, 5,520.49 and 1,215.47 is: 1,822.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.11 : 5,520.49 = 1,215.47 : x
  2. Step 2: Convert to fraction form
    3,681.11/5,520.49 = 1,215.47/x
  3. Step 3: Cross multiply
    3,681.11x = 5,520.49 × 1,215.47
  4. Step 4: Simplify right side
    3,681.11x = 6,709,976.18
  5. Step 5: Solve for x
    x = 6,709,976.18/3,681.11
  6. Step 6: Final answer
    x = 1,822.81

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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.