Home / 2,188.90-3,284.61-1,214.92

Finding the Fourth Proportional to 2,188.90, 3,284.61 and 1,214.92

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Solution

The fourth proportional to 2,188.90, 3,284.61 and 1,214.92 is: 1,823.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.90 : 3,284.61 = 1,214.92 : x
  2. Step 2: Convert to fraction form
    2,188.90/3,284.61 = 1,214.92/x
  3. Step 3: Cross multiply
    2,188.90x = 3,284.61 × 1,214.92
  4. Step 4: Simplify right side
    2,188.90x = 3,990,538.38
  5. Step 5: Solve for x
    x = 3,990,538.38/2,188.90
  6. Step 6: Final answer
    x = 1,823.08

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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.