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Finding the Fourth Proportional to 1,734.73, 2,393.55 and 988.48

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Solution

The fourth proportional to 1,734.73, 2,393.55 and 988.48 is: 1,363.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,734.73 : 2,393.55 = 988.48 : x
  2. Step 2: Convert to fraction form
    1,734.73/2,393.55 = 988.48/x
  3. Step 3: Cross multiply
    1,734.73x = 2,393.55 × 988.48
  4. Step 4: Simplify right side
    1,734.73x = 2,365,979.30
  5. Step 5: Solve for x
    x = 2,365,979.30/1,734.73
  6. Step 6: Final answer
    x = 1,363.89

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1.5x scale

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.