Home / 4,321.18-6,480.78-1,688.75

Finding the Fourth Proportional to 4,321.18, 6,480.78 and 1,688.75

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Solution

The fourth proportional to 4,321.18, 6,480.78 and 1,688.75 is: 2,532.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,321.18 : 6,480.78 = 1,688.75 : x
  2. Step 2: Convert to fraction form
    4,321.18/6,480.78 = 1,688.75/x
  3. Step 3: Cross multiply
    4,321.18x = 6,480.78 × 1,688.75
  4. Step 4: Simplify right side
    4,321.18x = 10,944,402.79
  5. Step 5: Solve for x
    x = 10,944,402.79/4,321.18
  6. Step 6: Final answer
    x = 2,532.73

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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.