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Finding the Fourth Proportional to 1,966.77, 2,949.37 and 870.37

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Solution

The fourth proportional to 1,966.77, 2,949.37 and 870.37 is: 1,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.77 : 2,949.37 = 870.37 : x
  2. Step 2: Convert to fraction form
    1,966.77/2,949.37 = 870.37/x
  3. Step 3: Cross multiply
    1,966.77x = 2,949.37 × 870.37
  4. Step 4: Simplify right side
    1,966.77x = 2,567,044.36
  5. Step 5: Solve for x
    x = 2,567,044.36/1,966.77
  6. Step 6: Final answer
    x = 1,305.21

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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.