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Finding the Fourth Proportional to 5,018.60, 7,530.60 and 4,291.50

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Solution

The fourth proportional to 5,018.60, 7,530.60 and 4,291.50 is: 6,439.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,018.60 : 7,530.60 = 4,291.50 : x
  2. Step 2: Convert to fraction form
    5,018.60/7,530.60 = 4,291.50/x
  3. Step 3: Cross multiply
    5,018.60x = 7,530.60 × 4,291.50
  4. Step 4: Simplify right side
    5,018.60x = 32,317,569.90
  5. Step 5: Solve for x
    x = 32,317,569.90/5,018.60
  6. Step 6: Final answer
    x = 6,439.56

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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.