Home / 3,779.10-5,215.07-2,100.51

Finding the Fourth Proportional to 3,779.10, 5,215.07 and 2,100.51

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Solution

The fourth proportional to 3,779.10, 5,215.07 and 2,100.51 is: 2,898.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.10 : 5,215.07 = 2,100.51 : x
  2. Step 2: Convert to fraction form
    3,779.10/5,215.07 = 2,100.51/x
  3. Step 3: Cross multiply
    3,779.10x = 5,215.07 × 2,100.51
  4. Step 4: Simplify right side
    3,779.10x = 10,954,296.18
  5. Step 5: Solve for x
    x = 10,954,296.18/3,779.10
  6. Step 6: Final answer
    x = 2,898.65

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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.