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Finding the Fourth Proportional to 2,669.76, 4,004.64 and 1,004.20

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Solution

The fourth proportional to 2,669.76, 4,004.64 and 1,004.20 is: 1,506.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.76 : 4,004.64 = 1,004.20 : x
  2. Step 2: Convert to fraction form
    2,669.76/4,004.64 = 1,004.20/x
  3. Step 3: Cross multiply
    2,669.76x = 4,004.64 × 1,004.20
  4. Step 4: Simplify right side
    2,669.76x = 4,021,449.48
  5. Step 5: Solve for x
    x = 4,021,449.48/2,669.76
  6. Step 6: Final answer
    x = 1,506.30

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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.