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Finding the Fourth Proportional to 1,693.17, 2,336.58 and 994.50

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Solution

The fourth proportional to 1,693.17, 2,336.58 and 994.50 is: 1,372.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.17 : 2,336.58 = 994.50 : x
  2. Step 2: Convert to fraction form
    1,693.17/2,336.58 = 994.50/x
  3. Step 3: Cross multiply
    1,693.17x = 2,336.58 × 994.50
  4. Step 4: Simplify right side
    1,693.17x = 2,323,728.81
  5. Step 5: Solve for x
    x = 2,323,728.81/1,693.17
  6. Step 6: Final answer
    x = 1,372.41

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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.