Home / 8,579.79-12,869.55-2,736.36

Finding the Fourth Proportional to 8,579.79, 12,869.55 and 2,736.36

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Solution

The fourth proportional to 8,579.79, 12,869.55 and 2,736.36 is: 4,104.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.79 : 12,869.55 = 2,736.36 : x
  2. Step 2: Convert to fraction form
    8,579.79/12,869.55 = 2,736.36/x
  3. Step 3: Cross multiply
    8,579.79x = 12,869.55 × 2,736.36
  4. Step 4: Simplify right side
    8,579.79x = 35,215,721.84
  5. Step 5: Solve for x
    x = 35,215,721.84/8,579.79
  6. Step 6: Final answer
    x = 4,104.50

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1.5x scale

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.