Home / 7,520.64-11,280.96-3,138

Finding the Fourth Proportional to 7,520.64, 11,280.96 and 3,138

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Solution

The fourth proportional to 7,520.64, 11,280.96 and 3,138 is: 4,707.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.64 : 11,280.96 = 3,138 : x
  2. Step 2: Convert to fraction form
    7,520.64/11,280.96 = 3,138/x
  3. Step 3: Cross multiply
    7,520.64x = 11,280.96 × 3,138
  4. Step 4: Simplify right side
    7,520.64x = 35,399,652.48
  5. Step 5: Solve for x
    x = 35,399,652.48/7,520.64
  6. Step 6: Final answer
    x = 4,707.00

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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.