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Finding the Fourth Proportional to 2,776, 4,164.04 and 724

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Solution

The fourth proportional to 2,776, 4,164.04 and 724 is: 1,086.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776 : 4,164.04 = 724 : x
  2. Step 2: Convert to fraction form
    2,776/4,164.04 = 724/x
  3. Step 3: Cross multiply
    2,776x = 4,164.04 × 724
  4. Step 4: Simplify right side
    2,776x = 3,014,764.96
  5. Step 5: Solve for x
    x = 3,014,764.96/2,776
  6. Step 6: Final answer
    x = 1,086.01

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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.