Home / 5,130.41-7,080.12-2,892.17

Finding the Fourth Proportional to 5,130.41, 7,080.12 and 2,892.17

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Solution

The fourth proportional to 5,130.41, 7,080.12 and 2,892.17 is: 3,991.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.41 : 7,080.12 = 2,892.17 : x
  2. Step 2: Convert to fraction form
    5,130.41/7,080.12 = 2,892.17/x
  3. Step 3: Cross multiply
    5,130.41x = 7,080.12 × 2,892.17
  4. Step 4: Simplify right side
    5,130.41x = 20,476,910.66
  5. Step 5: Solve for x
    x = 20,476,910.66/5,130.41
  6. Step 6: Final answer
    x = 3,991.28

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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.