Home / 8,685.05-11,985.44-5,150.61

Finding the Fourth Proportional to 8,685.05, 11,985.44 and 5,150.61

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Solution

The fourth proportional to 8,685.05, 11,985.44 and 5,150.61 is: 7,107.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.05 : 11,985.44 = 5,150.61 : x
  2. Step 2: Convert to fraction form
    8,685.05/11,985.44 = 5,150.61/x
  3. Step 3: Cross multiply
    8,685.05x = 11,985.44 × 5,150.61
  4. Step 4: Simplify right side
    8,685.05x = 61,732,301.37
  5. Step 5: Solve for x
    x = 61,732,301.37/8,685.05
  6. Step 6: Final answer
    x = 7,107.89

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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.