Home / 5,580.21-7,695.78-3,455.40

Finding the Fourth Proportional to 5,580.21, 7,695.78 and 3,455.40

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Solution

The fourth proportional to 5,580.21, 7,695.78 and 3,455.40 is: 4,765.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,580.21 : 7,695.78 = 3,455.40 : x
  2. Step 2: Convert to fraction form
    5,580.21/7,695.78 = 3,455.40/x
  3. Step 3: Cross multiply
    5,580.21x = 7,695.78 × 3,455.40
  4. Step 4: Simplify right side
    5,580.21x = 26,591,998.21
  5. Step 5: Solve for x
    x = 26,591,998.21/5,580.21
  6. Step 6: Final answer
    x = 4,765.41

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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.