Home / 3,779.85-5,216.28-2,101.19

Finding the Fourth Proportional to 3,779.85, 5,216.28 and 2,101.19

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Solution

The fourth proportional to 3,779.85, 5,216.28 and 2,101.19 is: 2,899.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.85 : 5,216.28 = 2,101.19 : x
  2. Step 2: Convert to fraction form
    3,779.85/5,216.28 = 2,101.19/x
  3. Step 3: Cross multiply
    3,779.85x = 5,216.28 × 2,101.19
  4. Step 4: Simplify right side
    3,779.85x = 10,960,408.41
  5. Step 5: Solve for x
    x = 10,960,408.41/3,779.85
  6. Step 6: Final answer
    x = 2,899.69

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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.