Home / 6,178.92-8,520.12-3,938.28

Finding the Fourth Proportional to 6,178.92, 8,520.12 and 3,938.28

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Solution

The fourth proportional to 6,178.92, 8,520.12 and 3,938.28 is: 5,430.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,178.92 : 8,520.12 = 3,938.28 : x
  2. Step 2: Convert to fraction form
    6,178.92/8,520.12 = 3,938.28/x
  3. Step 3: Cross multiply
    6,178.92x = 8,520.12 × 3,938.28
  4. Step 4: Simplify right side
    6,178.92x = 33,554,618.19
  5. Step 5: Solve for x
    x = 33,554,618.19/6,178.92
  6. Step 6: Final answer
    x = 5,430.50

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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.