Home / 3,706.60-5,115.62-2,135.40

Finding the Fourth Proportional to 3,706.60, 5,115.62 and 2,135.40

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Solution

The fourth proportional to 3,706.60, 5,115.62 and 2,135.40 is: 2,947.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,706.60 : 5,115.62 = 2,135.40 : x
  2. Step 2: Convert to fraction form
    3,706.60/5,115.62 = 2,135.40/x
  3. Step 3: Cross multiply
    3,706.60x = 5,115.62 × 2,135.40
  4. Step 4: Simplify right side
    3,706.60x = 10,923,894.95
  5. Step 5: Solve for x
    x = 10,923,894.95/3,706.60
  6. Step 6: Final answer
    x = 2,947.15

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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.