Home / 7,381.34-11,070.64-2,115.22

Finding the Fourth Proportional to 7,381.34, 11,070.64 and 2,115.22

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Solution

The fourth proportional to 7,381.34, 11,070.64 and 2,115.22 is: 3,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381.34 : 11,070.64 = 2,115.22 : x
  2. Step 2: Convert to fraction form
    7,381.34/11,070.64 = 2,115.22/x
  3. Step 3: Cross multiply
    7,381.34x = 11,070.64 × 2,115.22
  4. Step 4: Simplify right side
    7,381.34x = 23,416,839.14
  5. Step 5: Solve for x
    x = 23,416,839.14/7,381.34
  6. Step 6: Final answer
    x = 3,172.44

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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.