Home / 3,460.92-5,190.72-928.05

Finding the Fourth Proportional to 3,460.92, 5,190.72 and 928.05

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Solution

The fourth proportional to 3,460.92, 5,190.72 and 928.05 is: 1,391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.92 : 5,190.72 = 928.05 : x
  2. Step 2: Convert to fraction form
    3,460.92/5,190.72 = 928.05/x
  3. Step 3: Cross multiply
    3,460.92x = 5,190.72 × 928.05
  4. Step 4: Simplify right side
    3,460.92x = 4,817,232.58
  5. Step 5: Solve for x
    x = 4,817,232.58/3,460.92
  6. Step 6: Final answer
    x = 1,391.90

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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.