Home / 1,913.21-2,869.10-1,133.38

Finding the Fourth Proportional to 1,913.21, 2,869.10 and 1,133.38

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Solution

The fourth proportional to 1,913.21, 2,869.10 and 1,133.38 is: 1,699.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.21 : 2,869.10 = 1,133.38 : x
  2. Step 2: Convert to fraction form
    1,913.21/2,869.10 = 1,133.38/x
  3. Step 3: Cross multiply
    1,913.21x = 2,869.10 × 1,133.38
  4. Step 4: Simplify right side
    1,913.21x = 3,251,780.56
  5. Step 5: Solve for x
    x = 3,251,780.56/1,913.21
  6. Step 6: Final answer
    x = 1,699.65

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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.