Home / 2,109.70-3,165.29-1,013.30

Finding the Fourth Proportional to 2,109.70, 3,165.29 and 1,013.30

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Solution

The fourth proportional to 2,109.70, 3,165.29 and 1,013.30 is: 1,520.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.70 : 3,165.29 = 1,013.30 : x
  2. Step 2: Convert to fraction form
    2,109.70/3,165.29 = 1,013.30/x
  3. Step 3: Cross multiply
    2,109.70x = 3,165.29 × 1,013.30
  4. Step 4: Simplify right side
    2,109.70x = 3,207,388.36
  5. Step 5: Solve for x
    x = 3,207,388.36/2,109.70
  6. Step 6: Final answer
    x = 1,520.31

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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.