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Finding the Fourth Proportional to 1,754.54, 2,630.70 and 985.58

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Solution

The fourth proportional to 1,754.54, 2,630.70 and 985.58 is: 1,477.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.54 : 2,630.70 = 985.58 : x
  2. Step 2: Convert to fraction form
    1,754.54/2,630.70 = 985.58/x
  3. Step 3: Cross multiply
    1,754.54x = 2,630.70 × 985.58
  4. Step 4: Simplify right side
    1,754.54x = 2,592,765.31
  5. Step 5: Solve for x
    x = 2,592,765.31/1,754.54
  6. Step 6: Final answer
    x = 1,477.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.