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Finding the Fourth Proportional to 5,581.70, 7,709.56 and 4,087.52

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Solution

The fourth proportional to 5,581.70, 7,709.56 and 4,087.52 is: 5,645.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.70 : 7,709.56 = 4,087.52 : x
  2. Step 2: Convert to fraction form
    5,581.70/7,709.56 = 4,087.52/x
  3. Step 3: Cross multiply
    5,581.70x = 7,709.56 × 4,087.52
  4. Step 4: Simplify right side
    5,581.70x = 31,512,980.69
  5. Step 5: Solve for x
    x = 31,512,980.69/5,581.70
  6. Step 6: Final answer
    x = 5,645.77

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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.