Home / 8,936.79-12,334.36-5,159.43

Finding the Fourth Proportional to 8,936.79, 12,334.36 and 5,159.43

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Solution

The fourth proportional to 8,936.79, 12,334.36 and 5,159.43 is: 7,120.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.79 : 12,334.36 = 5,159.43 : x
  2. Step 2: Convert to fraction form
    8,936.79/12,334.36 = 5,159.43/x
  3. Step 3: Cross multiply
    8,936.79x = 12,334.36 × 5,159.43
  4. Step 4: Simplify right side
    8,936.79x = 63,638,267.01
  5. Step 5: Solve for x
    x = 63,638,267.01/8,936.79
  6. Step 6: Final answer
    x = 7,120.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.