Home / 3,689.26-5,091.18-2,117.35

Finding the Fourth Proportional to 3,689.26, 5,091.18 and 2,117.35

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Solution

The fourth proportional to 3,689.26, 5,091.18 and 2,117.35 is: 2,921.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.26 : 5,091.18 = 2,117.35 : x
  2. Step 2: Convert to fraction form
    3,689.26/5,091.18 = 2,117.35/x
  3. Step 3: Cross multiply
    3,689.26x = 5,091.18 × 2,117.35
  4. Step 4: Simplify right side
    3,689.26x = 10,779,809.97
  5. Step 5: Solve for x
    x = 10,779,809.97/3,689.26
  6. Step 6: Final answer
    x = 2,921.94

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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.