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Finding the Fourth Proportional to 2,476.86, 3,717.16 and 917.81

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Solution

The fourth proportional to 2,476.86, 3,717.16 and 917.81 is: 1,377.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,476.86 : 3,717.16 = 917.81 : x
  2. Step 2: Convert to fraction form
    2,476.86/3,717.16 = 917.81/x
  3. Step 3: Cross multiply
    2,476.86x = 3,717.16 × 917.81
  4. Step 4: Simplify right side
    2,476.86x = 3,411,646.62
  5. Step 5: Solve for x
    x = 3,411,646.62/2,476.86
  6. Step 6: Final answer
    x = 1,377.41

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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.