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Finding the Fourth Proportional to 1,871.94, 2,580.54 and 1,310.64

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Solution

The fourth proportional to 1,871.94, 2,580.54 and 1,310.64 is: 1,806.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.94 : 2,580.54 = 1,310.64 : x
  2. Step 2: Convert to fraction form
    1,871.94/2,580.54 = 1,310.64/x
  3. Step 3: Cross multiply
    1,871.94x = 2,580.54 × 1,310.64
  4. Step 4: Simplify right side
    1,871.94x = 3,382,158.95
  5. Step 5: Solve for x
    x = 3,382,158.95/1,871.94
  6. Step 6: Final answer
    x = 1,806.77

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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.