Home / 3,779.07-5,215.14-2,100.63

Finding the Fourth Proportional to 3,779.07, 5,215.14 and 2,100.63

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Solution

The fourth proportional to 3,779.07, 5,215.14 and 2,100.63 is: 2,898.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.07 : 5,215.14 = 2,100.63 : x
  2. Step 2: Convert to fraction form
    3,779.07/5,215.14 = 2,100.63/x
  3. Step 3: Cross multiply
    3,779.07x = 5,215.14 × 2,100.63
  4. Step 4: Simplify right side
    3,779.07x = 10,955,093.93
  5. Step 5: Solve for x
    x = 10,955,093.93/3,779.07
  6. Step 6: Final answer
    x = 2,898.89

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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.