Home / 3,218.53-4,830.53-1,272.10

Finding the Fourth Proportional to 3,218.53, 4,830.53 and 1,272.10

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Solution

The fourth proportional to 3,218.53, 4,830.53 and 1,272.10 is: 1,909.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.53 : 4,830.53 = 1,272.10 : x
  2. Step 2: Convert to fraction form
    3,218.53/4,830.53 = 1,272.10/x
  3. Step 3: Cross multiply
    3,218.53x = 4,830.53 × 1,272.10
  4. Step 4: Simplify right side
    3,218.53x = 6,144,917.21
  5. Step 5: Solve for x
    x = 6,144,917.21/3,218.53
  6. Step 6: Final answer
    x = 1,909.23

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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.