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Finding the Fourth Proportional to 1,808.60, 2,714.88 and 1,402.64

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Solution

The fourth proportional to 1,808.60, 2,714.88 and 1,402.64 is: 2,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,808.60 : 2,714.88 = 1,402.64 : x
  2. Step 2: Convert to fraction form
    1,808.60/2,714.88 = 1,402.64/x
  3. Step 3: Cross multiply
    1,808.60x = 2,714.88 × 1,402.64
  4. Step 4: Simplify right side
    1,808.60x = 3,807,999.28
  5. Step 5: Solve for x
    x = 3,807,999.28/1,808.60
  6. Step 6: Final answer
    x = 2,105.50

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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.