Home / 3,178.53-4,765.76-1,098.35

Finding the Fourth Proportional to 3,178.53, 4,765.76 and 1,098.35

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Solution

The fourth proportional to 3,178.53, 4,765.76 and 1,098.35 is: 1,646.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.53 : 4,765.76 = 1,098.35 : x
  2. Step 2: Convert to fraction form
    3,178.53/4,765.76 = 1,098.35/x
  3. Step 3: Cross multiply
    3,178.53x = 4,765.76 × 1,098.35
  4. Step 4: Simplify right side
    3,178.53x = 5,234,443.18
  5. Step 5: Solve for x
    x = 5,234,443.18/3,178.53
  6. Step 6: Final answer
    x = 1,646.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.