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Finding the Fourth Proportional to 2,676.79, 4,015.16 and 728.99

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Solution

The fourth proportional to 2,676.79, 4,015.16 and 728.99 is: 1,093.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,676.79 : 4,015.16 = 728.99 : x
  2. Step 2: Convert to fraction form
    2,676.79/4,015.16 = 728.99/x
  3. Step 3: Cross multiply
    2,676.79x = 4,015.16 × 728.99
  4. Step 4: Simplify right side
    2,676.79x = 2,927,011.49
  5. Step 5: Solve for x
    x = 2,927,011.49/2,676.79
  6. Step 6: Final answer
    x = 1,093.48

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1.5x scale

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.