Home / 5,167.15-7,130.67-2,809.28

Finding the Fourth Proportional to 5,167.15, 7,130.67 and 2,809.28

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Solution

The fourth proportional to 5,167.15, 7,130.67 and 2,809.28 is: 3,876.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.15 : 7,130.67 = 2,809.28 : x
  2. Step 2: Convert to fraction form
    5,167.15/7,130.67 = 2,809.28/x
  3. Step 3: Cross multiply
    5,167.15x = 7,130.67 × 2,809.28
  4. Step 4: Simplify right side
    5,167.15x = 20,032,048.62
  5. Step 5: Solve for x
    x = 20,032,048.62/5,167.15
  6. Step 6: Final answer
    x = 3,876.81

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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.