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Finding the Fourth Proportional to 1,847.74, 2,771 and 614.81

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Solution

The fourth proportional to 1,847.74, 2,771 and 614.81 is: 922.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,847.74 : 2,771 = 614.81 : x
  2. Step 2: Convert to fraction form
    1,847.74/2,771 = 614.81/x
  3. Step 3: Cross multiply
    1,847.74x = 2,771 × 614.81
  4. Step 4: Simplify right side
    1,847.74x = 1,703,638.51
  5. Step 5: Solve for x
    x = 1,703,638.51/1,847.74
  6. Step 6: Final answer
    x = 922.01

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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.