Home / 5,178.25-7,146.03-2,820.43

Finding the Fourth Proportional to 5,178.25, 7,146.03 and 2,820.43

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Solution

The fourth proportional to 5,178.25, 7,146.03 and 2,820.43 is: 3,892.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.25 : 7,146.03 = 2,820.43 : x
  2. Step 2: Convert to fraction form
    5,178.25/7,146.03 = 2,820.43/x
  3. Step 3: Cross multiply
    5,178.25x = 7,146.03 × 2,820.43
  4. Step 4: Simplify right side
    5,178.25x = 20,154,877.39
  5. Step 5: Solve for x
    x = 20,154,877.39/5,178.25
  6. Step 6: Final answer
    x = 3,892.22

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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.