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Finding the Fourth Proportional to 2,749.57, 4,124.30 and 669.59

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Solution

The fourth proportional to 2,749.57, 4,124.30 and 669.59 is: 1,004.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.57 : 4,124.30 = 669.59 : x
  2. Step 2: Convert to fraction form
    2,749.57/4,124.30 = 669.59/x
  3. Step 3: Cross multiply
    2,749.57x = 4,124.30 × 669.59
  4. Step 4: Simplify right side
    2,749.57x = 2,761,569.42
  5. Step 5: Solve for x
    x = 2,761,569.42/2,749.57
  6. Step 6: Final answer
    x = 1,004.36

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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.