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Finding the Fourth Proportional to 1,733.35, 2,392.02 and 987.31

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Solution

The fourth proportional to 1,733.35, 2,392.02 and 987.31 is: 1,362.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,733.35 : 2,392.02 = 987.31 : x
  2. Step 2: Convert to fraction form
    1,733.35/2,392.02 = 987.31/x
  3. Step 3: Cross multiply
    1,733.35x = 2,392.02 × 987.31
  4. Step 4: Simplify right side
    1,733.35x = 2,361,665.62
  5. Step 5: Solve for x
    x = 2,361,665.62/1,733.35
  6. Step 6: Final answer
    x = 1,362.49

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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.