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Finding the Fourth Proportional to 2,400.51, 3,600.78 and 669.15

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Solution

The fourth proportional to 2,400.51, 3,600.78 and 669.15 is: 1,003.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,400.51 : 3,600.78 = 669.15 : x
  2. Step 2: Convert to fraction form
    2,400.51/3,600.78 = 669.15/x
  3. Step 3: Cross multiply
    2,400.51x = 3,600.78 × 669.15
  4. Step 4: Simplify right side
    2,400.51x = 2,409,461.94
  5. Step 5: Solve for x
    x = 2,409,461.94/2,400.51
  6. Step 6: Final answer
    x = 1,003.73

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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.