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Finding the Fourth Proportional to 1,354.60, 1,877.23 and 1,328.68

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Solution

The fourth proportional to 1,354.60, 1,877.23 and 1,328.68 is: 1,841.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354.60 : 1,877.23 = 1,328.68 : x
  2. Step 2: Convert to fraction form
    1,354.60/1,877.23 = 1,328.68/x
  3. Step 3: Cross multiply
    1,354.60x = 1,877.23 × 1,328.68
  4. Step 4: Simplify right side
    1,354.60x = 2,494,237.96
  5. Step 5: Solve for x
    x = 2,494,237.96/1,354.60
  6. Step 6: Final answer
    x = 1,841.31

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.