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Finding the Fourth Proportional to 5,654.88, 8,479.20 and 1,705.60

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Solution

The fourth proportional to 5,654.88, 8,479.20 and 1,705.60 is: 2,557.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,654.88 : 8,479.20 = 1,705.60 : x
  2. Step 2: Convert to fraction form
    5,654.88/8,479.20 = 1,705.60/x
  3. Step 3: Cross multiply
    5,654.88x = 8,479.20 × 1,705.60
  4. Step 4: Simplify right side
    5,654.88x = 14,462,123.52
  5. Step 5: Solve for x
    x = 14,462,123.52/5,654.88
  6. Step 6: Final answer
    x = 2,557.46

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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.