Home / 3,513.22-5,290.68-3,128.74

Finding the Fourth Proportional to 3,513.22, 5,290.68 and 3,128.74

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Solution

The fourth proportional to 3,513.22, 5,290.68 and 3,128.74 is: 4,711.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,513.22 : 5,290.68 = 3,128.74 : x
  2. Step 2: Convert to fraction form
    3,513.22/5,290.68 = 3,128.74/x
  3. Step 3: Cross multiply
    3,513.22x = 5,290.68 × 3,128.74
  4. Step 4: Simplify right side
    3,513.22x = 16,553,162.14
  5. Step 5: Solve for x
    x = 16,553,162.14/3,513.22
  6. Step 6: Final answer
    x = 4,711.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.