Home / 5,178.41-7,146.14-2,820.56

Finding the Fourth Proportional to 5,178.41, 7,146.14 and 2,820.56

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Solution

The fourth proportional to 5,178.41, 7,146.14 and 2,820.56 is: 3,892.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.41 : 7,146.14 = 2,820.56 : x
  2. Step 2: Convert to fraction form
    5,178.41/7,146.14 = 2,820.56/x
  3. Step 3: Cross multiply
    5,178.41x = 7,146.14 × 2,820.56
  4. Step 4: Simplify right side
    5,178.41x = 20,156,082.67
  5. Step 5: Solve for x
    x = 20,156,082.67/5,178.41
  6. Step 6: Final answer
    x = 3,892.33

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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.