Home / 5,108.20-7,662.30-1,645.45

Finding the Fourth Proportional to 5,108.20, 7,662.30 and 1,645.45

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Solution

The fourth proportional to 5,108.20, 7,662.30 and 1,645.45 is: 2,468.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.20 : 7,662.30 = 1,645.45 : x
  2. Step 2: Convert to fraction form
    5,108.20/7,662.30 = 1,645.45/x
  3. Step 3: Cross multiply
    5,108.20x = 7,662.30 × 1,645.45
  4. Step 4: Simplify right side
    5,108.20x = 12,607,931.54
  5. Step 5: Solve for x
    x = 12,607,931.54/5,108.20
  6. Step 6: Final answer
    x = 2,468.18

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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.