Home / 3,145.42-4,341.15-1,819.09

Finding the Fourth Proportional to 3,145.42, 4,341.15 and 1,819.09

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Solution

The fourth proportional to 3,145.42, 4,341.15 and 1,819.09 is: 2,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.42 : 4,341.15 = 1,819.09 : x
  2. Step 2: Convert to fraction form
    3,145.42/4,341.15 = 1,819.09/x
  3. Step 3: Cross multiply
    3,145.42x = 4,341.15 × 1,819.09
  4. Step 4: Simplify right side
    3,145.42x = 7,896,942.55
  5. Step 5: Solve for x
    x = 7,896,942.55/3,145.42
  6. Step 6: Final answer
    x = 2,510.62

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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.