Home / 8,390.97-12,585.65-2,150.80

Finding the Fourth Proportional to 8,390.97, 12,585.65 and 2,150.80

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Solution

The fourth proportional to 8,390.97, 12,585.65 and 2,150.80 is: 3,226.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.97 : 12,585.65 = 2,150.80 : x
  2. Step 2: Convert to fraction form
    8,390.97/12,585.65 = 2,150.80/x
  3. Step 3: Cross multiply
    8,390.97x = 12,585.65 × 2,150.80
  4. Step 4: Simplify right side
    8,390.97x = 27,069,262.74
  5. Step 5: Solve for x
    x = 27,069,262.74/8,390.97
  6. Step 6: Final answer
    x = 3,226.00

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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.