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Finding the Fourth Proportional to 5,808.60, 8,712.78 and 1,425.89

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Solution

The fourth proportional to 5,808.60, 8,712.78 and 1,425.89 is: 2,138.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,808.60 : 8,712.78 = 1,425.89 : x
  2. Step 2: Convert to fraction form
    5,808.60/8,712.78 = 1,425.89/x
  3. Step 3: Cross multiply
    5,808.60x = 8,712.78 × 1,425.89
  4. Step 4: Simplify right side
    5,808.60x = 12,423,422.31
  5. Step 5: Solve for x
    x = 12,423,422.31/5,808.60
  6. Step 6: Final answer
    x = 2,138.80

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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.