Home / 8,667.90-11,958.48-5,685.39

Finding the Fourth Proportional to 8,667.90, 11,958.48 and 5,685.39

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Solution

The fourth proportional to 8,667.90, 11,958.48 and 5,685.39 is: 7,843.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667.90 : 11,958.48 = 5,685.39 : x
  2. Step 2: Convert to fraction form
    8,667.90/11,958.48 = 5,685.39/x
  3. Step 3: Cross multiply
    8,667.90x = 11,958.48 × 5,685.39
  4. Step 4: Simplify right side
    8,667.90x = 67,988,622.61
  5. Step 5: Solve for x
    x = 67,988,622.61/8,667.90
  6. Step 6: Final answer
    x = 7,843.72

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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.