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Finding the Fourth Proportional to 2,572.49, 3,860.15 and 1,091.49

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Solution

The fourth proportional to 2,572.49, 3,860.15 and 1,091.49 is: 1,637.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.49 : 3,860.15 = 1,091.49 : x
  2. Step 2: Convert to fraction form
    2,572.49/3,860.15 = 1,091.49/x
  3. Step 3: Cross multiply
    2,572.49x = 3,860.15 × 1,091.49
  4. Step 4: Simplify right side
    2,572.49x = 4,213,295.19
  5. Step 5: Solve for x
    x = 4,213,295.19/2,572.49
  6. Step 6: Final answer
    x = 1,637.83

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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.