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Finding the Fourth Proportional to 8,993.64, 13,490.40 and 7,451.40

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Solution

The fourth proportional to 8,993.64, 13,490.40 and 7,451.40 is: 11,177.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.64 : 13,490.40 = 7,451.40 : x
  2. Step 2: Convert to fraction form
    8,993.64/13,490.40 = 7,451.40/x
  3. Step 3: Cross multiply
    8,993.64x = 13,490.40 × 7,451.40
  4. Step 4: Simplify right side
    8,993.64x = 100,522,366.56
  5. Step 5: Solve for x
    x = 100,522,366.56/8,993.64
  6. Step 6: Final answer
    x = 11,177.05

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1.5x scale

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.