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Finding the Fourth Proportional to 3,145.70, 4,341.03 and 1,819.33

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Solution

The fourth proportional to 3,145.70, 4,341.03 and 1,819.33 is: 2,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.70 : 4,341.03 = 1,819.33 : x
  2. Step 2: Convert to fraction form
    3,145.70/4,341.03 = 1,819.33/x
  3. Step 3: Cross multiply
    3,145.70x = 4,341.03 × 1,819.33
  4. Step 4: Simplify right side
    3,145.70x = 7,897,748.43
  5. Step 5: Solve for x
    x = 7,897,748.43/3,145.70
  6. Step 6: Final answer
    x = 2,510.65

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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.