Home / 2,106.70-3,153.81-1,561.33

Finding the Fourth Proportional to 2,106.70, 3,153.81 and 1,561.33

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Solution

The fourth proportional to 2,106.70, 3,153.81 and 1,561.33 is: 2,337.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.70 : 3,153.81 = 1,561.33 : x
  2. Step 2: Convert to fraction form
    2,106.70/3,153.81 = 1,561.33/x
  3. Step 3: Cross multiply
    2,106.70x = 3,153.81 × 1,561.33
  4. Step 4: Simplify right side
    2,106.70x = 4,924,138.17
  5. Step 5: Solve for x
    x = 4,924,138.17/2,106.70
  6. Step 6: Final answer
    x = 2,337.37

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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.