Home / 5,128.10-7,684.05-4,301.90

Finding the Fourth Proportional to 5,128.10, 7,684.05 and 4,301.90

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Solution

The fourth proportional to 5,128.10, 7,684.05 and 4,301.90 is: 6,446.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.10 : 7,684.05 = 4,301.90 : x
  2. Step 2: Convert to fraction form
    5,128.10/7,684.05 = 4,301.90/x
  3. Step 3: Cross multiply
    5,128.10x = 7,684.05 × 4,301.90
  4. Step 4: Simplify right side
    5,128.10x = 33,056,014.70
  5. Step 5: Solve for x
    x = 33,056,014.70/5,128.10
  6. Step 6: Final answer
    x = 6,446.06

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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.