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Finding the Fourth Proportional to 2,087.52, 2,880.84 and 1,156

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Solution

The fourth proportional to 2,087.52, 2,880.84 and 1,156 is: 1,595.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.52 : 2,880.84 = 1,156 : x
  2. Step 2: Convert to fraction form
    2,087.52/2,880.84 = 1,156/x
  3. Step 3: Cross multiply
    2,087.52x = 2,880.84 × 1,156
  4. Step 4: Simplify right side
    2,087.52x = 3,330,251.04
  5. Step 5: Solve for x
    x = 3,330,251.04/2,087.52
  6. Step 6: Final answer
    x = 1,595.31

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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.