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Finding the Fourth Proportional to 1,877.04, 2,811.33 and 903.87

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Solution

The fourth proportional to 1,877.04, 2,811.33 and 903.87 is: 1,353.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.04 : 2,811.33 = 903.87 : x
  2. Step 2: Convert to fraction form
    1,877.04/2,811.33 = 903.87/x
  3. Step 3: Cross multiply
    1,877.04x = 2,811.33 × 903.87
  4. Step 4: Simplify right side
    1,877.04x = 2,541,076.85
  5. Step 5: Solve for x
    x = 2,541,076.85/1,877.04
  6. Step 6: Final answer
    x = 1,353.77

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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.