Home / 6,928.40-10,381.20-4,001.60

Finding the Fourth Proportional to 6,928.40, 10,381.20 and 4,001.60

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Solution

The fourth proportional to 6,928.40, 10,381.20 and 4,001.60 is: 5,995.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,928.40 : 10,381.20 = 4,001.60 : x
  2. Step 2: Convert to fraction form
    6,928.40/10,381.20 = 4,001.60/x
  3. Step 3: Cross multiply
    6,928.40x = 10,381.20 × 4,001.60
  4. Step 4: Simplify right side
    6,928.40x = 41,541,409.92
  5. Step 5: Solve for x
    x = 41,541,409.92/6,928.40
  6. Step 6: Final answer
    x = 5,995.82

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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.