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Finding the Fourth Proportional to 1,958.60, 2,695.68 and 1,718

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Solution

The fourth proportional to 1,958.60, 2,695.68 and 1,718 is: 2,364.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958.60 : 2,695.68 = 1,718 : x
  2. Step 2: Convert to fraction form
    1,958.60/2,695.68 = 1,718/x
  3. Step 3: Cross multiply
    1,958.60x = 2,695.68 × 1,718
  4. Step 4: Simplify right side
    1,958.60x = 4,631,178.24
  5. Step 5: Solve for x
    x = 4,631,178.24/1,958.60
  6. Step 6: Final answer
    x = 2,364.53

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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.