Home / 3,818.12-5,729.13-1,819.07

Finding the Fourth Proportional to 3,818.12, 5,729.13 and 1,819.07

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Solution

The fourth proportional to 3,818.12, 5,729.13 and 1,819.07 is: 2,729.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.12 : 5,729.13 = 1,819.07 : x
  2. Step 2: Convert to fraction form
    3,818.12/5,729.13 = 1,819.07/x
  3. Step 3: Cross multiply
    3,818.12x = 5,729.13 × 1,819.07
  4. Step 4: Simplify right side
    3,818.12x = 10,421,688.51
  5. Step 5: Solve for x
    x = 10,421,688.51/3,818.12
  6. Step 6: Final answer
    x = 2,729.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.