Home / 2,776.90-4,161.24-1,215.46

Finding the Fourth Proportional to 2,776.90, 4,161.24 and 1,215.46

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Solution

The fourth proportional to 2,776.90, 4,161.24 and 1,215.46 is: 1,821.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.90 : 4,161.24 = 1,215.46 : x
  2. Step 2: Convert to fraction form
    2,776.90/4,161.24 = 1,215.46/x
  3. Step 3: Cross multiply
    2,776.90x = 4,161.24 × 1,215.46
  4. Step 4: Simplify right side
    2,776.90x = 5,057,820.77
  5. Step 5: Solve for x
    x = 5,057,820.77/2,776.90
  6. Step 6: Final answer
    x = 1,821.39

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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.