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Finding the Fourth Proportional to 7,381.60, 11,072.40 and 2,451.40

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Solution

The fourth proportional to 7,381.60, 11,072.40 and 2,451.40 is: 3,677.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381.60 : 11,072.40 = 2,451.40 : x
  2. Step 2: Convert to fraction form
    7,381.60/11,072.40 = 2,451.40/x
  3. Step 3: Cross multiply
    7,381.60x = 11,072.40 × 2,451.40
  4. Step 4: Simplify right side
    7,381.60x = 27,142,881.36
  5. Step 5: Solve for x
    x = 27,142,881.36/7,381.60
  6. Step 6: Final answer
    x = 3,677.10

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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.