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Finding the Fourth Proportional to 5,328.60, 7,994.04 and 1,631.10

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Solution

The fourth proportional to 5,328.60, 7,994.04 and 1,631.10 is: 2,447.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.60 : 7,994.04 = 1,631.10 : x
  2. Step 2: Convert to fraction form
    5,328.60/7,994.04 = 1,631.10/x
  3. Step 3: Cross multiply
    5,328.60x = 7,994.04 × 1,631.10
  4. Step 4: Simplify right side
    5,328.60x = 13,039,078.64
  5. Step 5: Solve for x
    x = 13,039,078.64/5,328.60
  6. Step 6: Final answer
    x = 2,447.00

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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.