Home / 3,689.30-5,088.93-2,196.21

Finding the Fourth Proportional to 3,689.30, 5,088.93 and 2,196.21

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Solution

The fourth proportional to 3,689.30, 5,088.93 and 2,196.21 is: 3,029.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.30 : 5,088.93 = 2,196.21 : x
  2. Step 2: Convert to fraction form
    3,689.30/5,088.93 = 2,196.21/x
  3. Step 3: Cross multiply
    3,689.30x = 5,088.93 × 2,196.21
  4. Step 4: Simplify right side
    3,689.30x = 11,176,369.80
  5. Step 5: Solve for x
    x = 11,176,369.80/3,689.30
  6. Step 6: Final answer
    x = 3,029.40

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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.