Home / 5,178.24-7,145.28-3,317.76

Finding the Fourth Proportional to 5,178.24, 7,145.28 and 3,317.76

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Solution

The fourth proportional to 5,178.24, 7,145.28 and 3,317.76 is: 4,578.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.24 : 7,145.28 = 3,317.76 : x
  2. Step 2: Convert to fraction form
    5,178.24/7,145.28 = 3,317.76/x
  3. Step 3: Cross multiply
    5,178.24x = 7,145.28 × 3,317.76
  4. Step 4: Simplify right side
    5,178.24x = 23,706,324.17
  5. Step 5: Solve for x
    x = 23,706,324.17/5,178.24
  6. Step 6: Final answer
    x = 4,578.07

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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.