Home / 3,128.62-4,689.28-1,741.30

Finding the Fourth Proportional to 3,128.62, 4,689.28 and 1,741.30

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Solution

The fourth proportional to 3,128.62, 4,689.28 and 1,741.30 is: 2,609.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.62 : 4,689.28 = 1,741.30 : x
  2. Step 2: Convert to fraction form
    3,128.62/4,689.28 = 1,741.30/x
  3. Step 3: Cross multiply
    3,128.62x = 4,689.28 × 1,741.30
  4. Step 4: Simplify right side
    3,128.62x = 8,165,443.26
  5. Step 5: Solve for x
    x = 8,165,443.26/3,128.62
  6. Step 6: Final answer
    x = 2,609.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.