Home / 2,154.60-3,227.04-1,287.09

Finding the Fourth Proportional to 2,154.60, 3,227.04 and 1,287.09

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Solution

The fourth proportional to 2,154.60, 3,227.04 and 1,287.09 is: 1,927.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.60 : 3,227.04 = 1,287.09 : x
  2. Step 2: Convert to fraction form
    2,154.60/3,227.04 = 1,287.09/x
  3. Step 3: Cross multiply
    2,154.60x = 3,227.04 × 1,287.09
  4. Step 4: Simplify right side
    2,154.60x = 4,153,490.91
  5. Step 5: Solve for x
    x = 4,153,490.91/2,154.60
  6. Step 6: Final answer
    x = 1,927.73

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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.