Home / 4,121.60-5,689.36-3,684.20

Finding the Fourth Proportional to 4,121.60, 5,689.36 and 3,684.20

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Solution

The fourth proportional to 4,121.60, 5,689.36 and 3,684.20 is: 5,085.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.60 : 5,689.36 = 3,684.20 : x
  2. Step 2: Convert to fraction form
    4,121.60/5,689.36 = 3,684.20/x
  3. Step 3: Cross multiply
    4,121.60x = 5,689.36 × 3,684.20
  4. Step 4: Simplify right side
    4,121.60x = 20,960,740.11
  5. Step 5: Solve for x
    x = 20,960,740.11/4,121.60
  6. Step 6: Final answer
    x = 5,085.58

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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.