Home / 5,451.05-7,520.20-3,955.65

Finding the Fourth Proportional to 5,451.05, 7,520.20 and 3,955.65

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Solution

The fourth proportional to 5,451.05, 7,520.20 and 3,955.65 is: 5,457.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.05 : 7,520.20 = 3,955.65 : x
  2. Step 2: Convert to fraction form
    5,451.05/7,520.20 = 3,955.65/x
  3. Step 3: Cross multiply
    5,451.05x = 7,520.20 × 3,955.65
  4. Step 4: Simplify right side
    5,451.05x = 29,747,259.35
  5. Step 5: Solve for x
    x = 29,747,259.35/5,451.05
  6. Step 6: Final answer
    x = 5,457.17

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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.