Home / 3,057.85-4,218.63-1,876.87

Finding the Fourth Proportional to 3,057.85, 4,218.63 and 1,876.87

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Solution

The fourth proportional to 3,057.85, 4,218.63 and 1,876.87 is: 2,589.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.85 : 4,218.63 = 1,876.87 : x
  2. Step 2: Convert to fraction form
    3,057.85/4,218.63 = 1,876.87/x
  3. Step 3: Cross multiply
    3,057.85x = 4,218.63 × 1,876.87
  4. Step 4: Simplify right side
    3,057.85x = 7,917,828.88
  5. Step 5: Solve for x
    x = 7,917,828.88/3,057.85
  6. Step 6: Final answer
    x = 2,589.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.