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Finding the Fourth Proportional to 1,801.41, 2,484.90 and 1,212.75

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Solution

The fourth proportional to 1,801.41, 2,484.90 and 1,212.75 is: 1,672.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,801.41 : 2,484.90 = 1,212.75 : x
  2. Step 2: Convert to fraction form
    1,801.41/2,484.90 = 1,212.75/x
  3. Step 3: Cross multiply
    1,801.41x = 2,484.90 × 1,212.75
  4. Step 4: Simplify right side
    1,801.41x = 3,013,562.48
  5. Step 5: Solve for x
    x = 3,013,562.48/1,801.41
  6. Step 6: Final answer
    x = 1,672.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.