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Finding the Fourth Proportional to 3,360.92, 4,638.15 and 1,868.90

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Solution

The fourth proportional to 3,360.92, 4,638.15 and 1,868.90 is: 2,579.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,360.92 : 4,638.15 = 1,868.90 : x
  2. Step 2: Convert to fraction form
    3,360.92/4,638.15 = 1,868.90/x
  3. Step 3: Cross multiply
    3,360.92x = 4,638.15 × 1,868.90
  4. Step 4: Simplify right side
    3,360.92x = 8,668,238.54
  5. Step 5: Solve for x
    x = 8,668,238.54/3,360.92
  6. Step 6: Final answer
    x = 2,579.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.