Home / 3,779.49-5,215.85-2,100.89

Finding the Fourth Proportional to 3,779.49, 5,215.85 and 2,100.89

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Solution

The fourth proportional to 3,779.49, 5,215.85 and 2,100.89 is: 2,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.49 : 5,215.85 = 2,100.89 : x
  2. Step 2: Convert to fraction form
    3,779.49/5,215.85 = 2,100.89/x
  3. Step 3: Cross multiply
    3,779.49x = 5,215.85 × 2,100.89
  4. Step 4: Simplify right side
    3,779.49x = 10,957,927.11
  5. Step 5: Solve for x
    x = 10,957,927.11/3,779.49
  6. Step 6: Final answer
    x = 2,899.31

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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.