Home / 8,686.69-13,030.04-2,112.88

Finding the Fourth Proportional to 8,686.69, 13,030.04 and 2,112.88

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Solution

The fourth proportional to 8,686.69, 13,030.04 and 2,112.88 is: 3,169.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.69 : 13,030.04 = 2,112.88 : x
  2. Step 2: Convert to fraction form
    8,686.69/13,030.04 = 2,112.88/x
  3. Step 3: Cross multiply
    8,686.69x = 13,030.04 × 2,112.88
  4. Step 4: Simplify right side
    8,686.69x = 27,530,910.92
  5. Step 5: Solve for x
    x = 27,530,910.92/8,686.69
  6. Step 6: Final answer
    x = 3,169.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.