Home / 3,689.13-5,089.91-2,196.30

Finding the Fourth Proportional to 3,689.13, 5,089.91 and 2,196.30

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Solution

The fourth proportional to 3,689.13, 5,089.91 and 2,196.30 is: 3,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.13 : 5,089.91 = 2,196.30 : x
  2. Step 2: Convert to fraction form
    3,689.13/5,089.91 = 2,196.30/x
  3. Step 3: Cross multiply
    3,689.13x = 5,089.91 × 2,196.30
  4. Step 4: Simplify right side
    3,689.13x = 11,178,969.33
  5. Step 5: Solve for x
    x = 11,178,969.33/3,689.13
  6. Step 6: Final answer
    x = 3,030.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.