Home / 3,147.55-4,717.90-1,480.64

Finding the Fourth Proportional to 3,147.55, 4,717.90 and 1,480.64

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Solution

The fourth proportional to 3,147.55, 4,717.90 and 1,480.64 is: 2,219.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.55 : 4,717.90 = 1,480.64 : x
  2. Step 2: Convert to fraction form
    3,147.55/4,717.90 = 1,480.64/x
  3. Step 3: Cross multiply
    3,147.55x = 4,717.90 × 1,480.64
  4. Step 4: Simplify right side
    3,147.55x = 6,985,511.46
  5. Step 5: Solve for x
    x = 6,985,511.46/3,147.55
  6. Step 6: Final answer
    x = 2,219.35

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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.