Home / 8,664.71-11,945.68-5,679.45

Finding the Fourth Proportional to 8,664.71, 11,945.68 and 5,679.45

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Solution

The fourth proportional to 8,664.71, 11,945.68 and 5,679.45 is: 7,830.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.71 : 11,945.68 = 5,679.45 : x
  2. Step 2: Convert to fraction form
    8,664.71/11,945.68 = 5,679.45/x
  3. Step 3: Cross multiply
    8,664.71x = 11,945.68 × 5,679.45
  4. Step 4: Simplify right side
    8,664.71x = 67,844,878.08
  5. Step 5: Solve for x
    x = 67,844,878.08/8,664.71
  6. Step 6: Final answer
    x = 7,830.03

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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.