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Finding the Fourth Proportional to 7,775.82, 11,665.08 and 3,615.03

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Solution

The fourth proportional to 7,775.82, 11,665.08 and 3,615.03 is: 5,423.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.82 : 11,665.08 = 3,615.03 : x
  2. Step 2: Convert to fraction form
    7,775.82/11,665.08 = 3,615.03/x
  3. Step 3: Cross multiply
    7,775.82x = 11,665.08 × 3,615.03
  4. Step 4: Simplify right side
    7,775.82x = 42,169,614.15
  5. Step 5: Solve for x
    x = 42,169,614.15/7,775.82
  6. Step 6: Final answer
    x = 5,423.17

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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.