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Finding the Fourth Proportional to 1,695.64, 2,339.58 and 997.06

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Solution

The fourth proportional to 1,695.64, 2,339.58 and 997.06 is: 1,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.64 : 2,339.58 = 997.06 : x
  2. Step 2: Convert to fraction form
    1,695.64/2,339.58 = 997.06/x
  3. Step 3: Cross multiply
    1,695.64x = 2,339.58 × 997.06
  4. Step 4: Simplify right side
    1,695.64x = 2,332,701.63
  5. Step 5: Solve for x
    x = 2,332,701.63/1,695.64
  6. Step 6: Final answer
    x = 1,375.71

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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.