Home / 2,809.85-3,877.59-1,567.85

Finding the Fourth Proportional to 2,809.85, 3,877.59 and 1,567.85

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Solution

The fourth proportional to 2,809.85, 3,877.59 and 1,567.85 is: 2,163.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.85 : 3,877.59 = 1,567.85 : x
  2. Step 2: Convert to fraction form
    2,809.85/3,877.59 = 1,567.85/x
  3. Step 3: Cross multiply
    2,809.85x = 3,877.59 × 1,567.85
  4. Step 4: Simplify right side
    2,809.85x = 6,079,452.25
  5. Step 5: Solve for x
    x = 6,079,452.25/2,809.85
  6. Step 6: Final answer
    x = 2,163.63

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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.