Home / 5,190.16-7,790.64-3,470.80

Finding the Fourth Proportional to 5,190.16, 7,790.64 and 3,470.80

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Solution

The fourth proportional to 5,190.16, 7,790.64 and 3,470.80 is: 5,209.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.16 : 7,790.64 = 3,470.80 : x
  2. Step 2: Convert to fraction form
    5,190.16/7,790.64 = 3,470.80/x
  3. Step 3: Cross multiply
    5,190.16x = 7,790.64 × 3,470.80
  4. Step 4: Simplify right side
    5,190.16x = 27,039,753.31
  5. Step 5: Solve for x
    x = 27,039,753.31/5,190.16
  6. Step 6: Final answer
    x = 5,209.81

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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.