Home / 3,928.60-5,892.90-1,006.80

Finding the Fourth Proportional to 3,928.60, 5,892.90 and 1,006.80

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Solution

The fourth proportional to 3,928.60, 5,892.90 and 1,006.80 is: 1,510.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.60 : 5,892.90 = 1,006.80 : x
  2. Step 2: Convert to fraction form
    3,928.60/5,892.90 = 1,006.80/x
  3. Step 3: Cross multiply
    3,928.60x = 5,892.90 × 1,006.80
  4. Step 4: Simplify right side
    3,928.60x = 5,932,971.72
  5. Step 5: Solve for x
    x = 5,932,971.72/3,928.60
  6. Step 6: Final answer
    x = 1,510.20

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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.