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Finding the Fourth Proportional to 1,698.66, 2,343.87 and 1,000.17

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Solution

The fourth proportional to 1,698.66, 2,343.87 and 1,000.17 is: 1,380.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.66 : 2,343.87 = 1,000.17 : x
  2. Step 2: Convert to fraction form
    1,698.66/2,343.87 = 1,000.17/x
  3. Step 3: Cross multiply
    1,698.66x = 2,343.87 × 1,000.17
  4. Step 4: Simplify right side
    1,698.66x = 2,344,268.46
  5. Step 5: Solve for x
    x = 2,344,268.46/1,698.66
  6. Step 6: Final answer
    x = 1,380.07

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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.