Home / 8,720.17-13,078.28-2,480.04

Finding the Fourth Proportional to 8,720.17, 13,078.28 and 2,480.04

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Solution

The fourth proportional to 8,720.17, 13,078.28 and 2,480.04 is: 3,719.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.17 : 13,078.28 = 2,480.04 : x
  2. Step 2: Convert to fraction form
    8,720.17/13,078.28 = 2,480.04/x
  3. Step 3: Cross multiply
    8,720.17x = 13,078.28 × 2,480.04
  4. Step 4: Simplify right side
    8,720.17x = 32,434,579.74
  5. Step 5: Solve for x
    x = 32,434,579.74/8,720.17
  6. Step 6: Final answer
    x = 3,719.49

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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.