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Finding the Fourth Proportional to 1,964.60, 2,710.44 and 1,178.88

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Solution

The fourth proportional to 1,964.60, 2,710.44 and 1,178.88 is: 1,626.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.60 : 2,710.44 = 1,178.88 : x
  2. Step 2: Convert to fraction form
    1,964.60/2,710.44 = 1,178.88/x
  3. Step 3: Cross multiply
    1,964.60x = 2,710.44 × 1,178.88
  4. Step 4: Simplify right side
    1,964.60x = 3,195,283.51
  5. Step 5: Solve for x
    x = 3,195,283.51/1,964.60
  6. Step 6: Final answer
    x = 1,626.43

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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.