Home / 8,679.33-11,977.70-5,320.21

Finding the Fourth Proportional to 8,679.33, 11,977.70 and 5,320.21

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Solution

The fourth proportional to 8,679.33, 11,977.70 and 5,320.21 is: 7,342.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.33 : 11,977.70 = 5,320.21 : x
  2. Step 2: Convert to fraction form
    8,679.33/11,977.70 = 5,320.21/x
  3. Step 3: Cross multiply
    8,679.33x = 11,977.70 × 5,320.21
  4. Step 4: Simplify right side
    8,679.33x = 63,723,869.13
  5. Step 5: Solve for x
    x = 63,723,869.13/8,679.33
  6. Step 6: Final answer
    x = 7,342.03

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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.