Home / 3,645.90-5,458.05-3,432.30

Finding the Fourth Proportional to 3,645.90, 5,458.05 and 3,432.30

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Solution

The fourth proportional to 3,645.90, 5,458.05 and 3,432.30 is: 5,138.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,645.90 : 5,458.05 = 3,432.30 : x
  2. Step 2: Convert to fraction form
    3,645.90/5,458.05 = 3,432.30/x
  3. Step 3: Cross multiply
    3,645.90x = 5,458.05 × 3,432.30
  4. Step 4: Simplify right side
    3,645.90x = 18,733,665.02
  5. Step 5: Solve for x
    x = 18,733,665.02/3,645.90
  6. Step 6: Final answer
    x = 5,138.28

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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.