Home / 2,191.25-3,281.64-1,214.93

Finding the Fourth Proportional to 2,191.25, 3,281.64 and 1,214.93

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Solution

The fourth proportional to 2,191.25, 3,281.64 and 1,214.93 is: 1,819.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.25 : 3,281.64 = 1,214.93 : x
  2. Step 2: Convert to fraction form
    2,191.25/3,281.64 = 1,214.93/x
  3. Step 3: Cross multiply
    2,191.25x = 3,281.64 × 1,214.93
  4. Step 4: Simplify right side
    2,191.25x = 3,986,946.48
  5. Step 5: Solve for x
    x = 3,986,946.48/2,191.25
  6. Step 6: Final answer
    x = 1,819.49

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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.