Home / 5,178.29-7,150.25-4,221.35

Finding the Fourth Proportional to 5,178.29, 7,150.25 and 4,221.35

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Solution

The fourth proportional to 5,178.29, 7,150.25 and 4,221.35 is: 5,828.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.29 : 7,150.25 = 4,221.35 : x
  2. Step 2: Convert to fraction form
    5,178.29/7,150.25 = 4,221.35/x
  3. Step 3: Cross multiply
    5,178.29x = 7,150.25 × 4,221.35
  4. Step 4: Simplify right side
    5,178.29x = 30,183,697.58
  5. Step 5: Solve for x
    x = 30,183,697.58/5,178.29
  6. Step 6: Final answer
    x = 5,828.90

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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.