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Finding the Fourth Proportional to 2,087.75, 2,881.19 and 1,156.25

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Solution

The fourth proportional to 2,087.75, 2,881.19 and 1,156.25 is: 1,595.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.75 : 2,881.19 = 1,156.25 : x
  2. Step 2: Convert to fraction form
    2,087.75/2,881.19 = 1,156.25/x
  3. Step 3: Cross multiply
    2,087.75x = 2,881.19 × 1,156.25
  4. Step 4: Simplify right side
    2,087.75x = 3,331,375.94
  5. Step 5: Solve for x
    x = 3,331,375.94/2,087.75
  6. Step 6: Final answer
    x = 1,595.68

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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.