Home / 3,409.20-4,702.55-2,149.20

Finding the Fourth Proportional to 3,409.20, 4,702.55 and 2,149.20

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Solution

The fourth proportional to 3,409.20, 4,702.55 and 2,149.20 is: 2,964.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.20 : 4,702.55 = 2,149.20 : x
  2. Step 2: Convert to fraction form
    3,409.20/4,702.55 = 2,149.20/x
  3. Step 3: Cross multiply
    3,409.20x = 4,702.55 × 2,149.20
  4. Step 4: Simplify right side
    3,409.20x = 10,106,709.71
  5. Step 5: Solve for x
    x = 10,106,709.71/3,409.20
  6. Step 6: Final answer
    x = 2,964.54

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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.