Home / 5,167.48-7,130.85-2,809.61

Finding the Fourth Proportional to 5,167.48, 7,130.85 and 2,809.61

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Solution

The fourth proportional to 5,167.48, 7,130.85 and 2,809.61 is: 3,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.48 : 7,130.85 = 2,809.61 : x
  2. Step 2: Convert to fraction form
    5,167.48/7,130.85 = 2,809.61/x
  3. Step 3: Cross multiply
    5,167.48x = 7,130.85 × 2,809.61
  4. Step 4: Simplify right side
    5,167.48x = 20,034,907.47
  5. Step 5: Solve for x
    x = 20,034,907.47/5,167.48
  6. Step 6: Final answer
    x = 3,877.11

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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.