Home / 5,167.46-7,131.08-2,809.58

Finding the Fourth Proportional to 5,167.46, 7,131.08 and 2,809.58

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Solution

The fourth proportional to 5,167.46, 7,131.08 and 2,809.58 is: 3,877.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.46 : 7,131.08 = 2,809.58 : x
  2. Step 2: Convert to fraction form
    5,167.46/7,131.08 = 2,809.58/x
  3. Step 3: Cross multiply
    5,167.46x = 7,131.08 × 2,809.58
  4. Step 4: Simplify right side
    5,167.46x = 20,035,339.75
  5. Step 5: Solve for x
    x = 20,035,339.75/5,167.46
  6. Step 6: Final answer
    x = 3,877.21

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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.