Home / 6,128.40-8,454.48-3,769.68

Finding the Fourth Proportional to 6,128.40, 8,454.48 and 3,769.68

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Solution

The fourth proportional to 6,128.40, 8,454.48 and 3,769.68 is: 5,200.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.40 : 8,454.48 = 3,769.68 : x
  2. Step 2: Convert to fraction form
    6,128.40/8,454.48 = 3,769.68/x
  3. Step 3: Cross multiply
    6,128.40x = 8,454.48 × 3,769.68
  4. Step 4: Simplify right side
    6,128.40x = 31,870,684.17
  5. Step 5: Solve for x
    x = 31,870,684.17/6,128.40
  6. Step 6: Final answer
    x = 5,200.49

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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.