Home / 4,421.16-6,640.20-2,781

Finding the Fourth Proportional to 4,421.16, 6,640.20 and 2,781

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Solution

The fourth proportional to 4,421.16, 6,640.20 and 2,781 is: 4,176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,421.16 : 6,640.20 = 2,781 : x
  2. Step 2: Convert to fraction form
    4,421.16/6,640.20 = 2,781/x
  3. Step 3: Cross multiply
    4,421.16x = 6,640.20 × 2,781
  4. Step 4: Simplify right side
    4,421.16x = 18,466,396.20
  5. Step 5: Solve for x
    x = 18,466,396.20/4,421.16
  6. Step 6: Final answer
    x = 4,176.82

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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.