Home / 3,457.80-5,205.39-3,151.62

Finding the Fourth Proportional to 3,457.80, 5,205.39 and 3,151.62

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Solution

The fourth proportional to 3,457.80, 5,205.39 and 3,151.62 is: 4,744.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,457.80 : 5,205.39 = 3,151.62 : x
  2. Step 2: Convert to fraction form
    3,457.80/5,205.39 = 3,151.62/x
  3. Step 3: Cross multiply
    3,457.80x = 5,205.39 × 3,151.62
  4. Step 4: Simplify right side
    3,457.80x = 16,405,411.23
  5. Step 5: Solve for x
    x = 16,405,411.23/3,457.80
  6. Step 6: Final answer
    x = 4,744.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.