Home / 4,321.13-6,480.32-1,398.75

Finding the Fourth Proportional to 4,321.13, 6,480.32 and 1,398.75

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Solution

The fourth proportional to 4,321.13, 6,480.32 and 1,398.75 is: 2,097.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,321.13 : 6,480.32 = 1,398.75 : x
  2. Step 2: Convert to fraction form
    4,321.13/6,480.32 = 1,398.75/x
  3. Step 3: Cross multiply
    4,321.13x = 6,480.32 × 1,398.75
  4. Step 4: Simplify right side
    4,321.13x = 9,064,347.60
  5. Step 5: Solve for x
    x = 9,064,347.60/4,321.13
  6. Step 6: Final answer
    x = 2,097.68

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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.