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Finding the Fourth Proportional to 7,110.43, 9,807.10 and 5,221.42

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Solution

The fourth proportional to 7,110.43, 9,807.10 and 5,221.42 is: 7,201.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.43 : 9,807.10 = 5,221.42 : x
  2. Step 2: Convert to fraction form
    7,110.43/9,807.10 = 5,221.42/x
  3. Step 3: Cross multiply
    7,110.43x = 9,807.10 × 5,221.42
  4. Step 4: Simplify right side
    7,110.43x = 51,206,988.08
  5. Step 5: Solve for x
    x = 51,206,988.08/7,110.43
  6. Step 6: Final answer
    x = 7,201.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.