Home / 3,615.81-5,418.04-2,154.17

Finding the Fourth Proportional to 3,615.81, 5,418.04 and 2,154.17

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Solution

The fourth proportional to 3,615.81, 5,418.04 and 2,154.17 is: 3,227.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.81 : 5,418.04 = 2,154.17 : x
  2. Step 2: Convert to fraction form
    3,615.81/5,418.04 = 2,154.17/x
  3. Step 3: Cross multiply
    3,615.81x = 5,418.04 × 2,154.17
  4. Step 4: Simplify right side
    3,615.81x = 11,671,379.23
  5. Step 5: Solve for x
    x = 11,671,379.23/3,615.81
  6. Step 6: Final answer
    x = 3,227.87

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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.