Home / 3,145.84-4,340.91-1,819.34

Finding the Fourth Proportional to 3,145.84, 4,340.91 and 1,819.34

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Solution

The fourth proportional to 3,145.84, 4,340.91 and 1,819.34 is: 2,510.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.84 : 4,340.91 = 1,819.34 : x
  2. Step 2: Convert to fraction form
    3,145.84/4,340.91 = 1,819.34/x
  3. Step 3: Cross multiply
    3,145.84x = 4,340.91 × 1,819.34
  4. Step 4: Simplify right side
    3,145.84x = 7,897,591.20
  5. Step 5: Solve for x
    x = 7,897,591.20/3,145.84
  6. Step 6: Final answer
    x = 2,510.49

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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.