Home / 5,645.34-7,790.40-3,161.34

Finding the Fourth Proportional to 5,645.34, 7,790.40 and 3,161.34

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Solution

The fourth proportional to 5,645.34, 7,790.40 and 3,161.34 is: 4,362.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.34 : 7,790.40 = 3,161.34 : x
  2. Step 2: Convert to fraction form
    5,645.34/7,790.40 = 3,161.34/x
  3. Step 3: Cross multiply
    5,645.34x = 7,790.40 × 3,161.34
  4. Step 4: Simplify right side
    5,645.34x = 24,628,103.14
  5. Step 5: Solve for x
    x = 24,628,103.14/5,645.34
  6. Step 6: Final answer
    x = 4,362.55

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Half scale
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Double scale
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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.