Home / 3,839.67-5,298-2,779.10

Finding the Fourth Proportional to 3,839.67, 5,298 and 2,779.10

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Solution

The fourth proportional to 3,839.67, 5,298 and 2,779.10 is: 3,834.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.67 : 5,298 = 2,779.10 : x
  2. Step 2: Convert to fraction form
    3,839.67/5,298 = 2,779.10/x
  3. Step 3: Cross multiply
    3,839.67x = 5,298 × 2,779.10
  4. Step 4: Simplify right side
    3,839.67x = 14,723,645.31
  5. Step 5: Solve for x
    x = 14,723,645.31/3,839.67
  6. Step 6: Final answer
    x = 3,834.61

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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.