Home / 3,708.72-5,115.96-2,135.70

Finding the Fourth Proportional to 3,708.72, 5,115.96 and 2,135.70

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Solution

The fourth proportional to 3,708.72, 5,115.96 and 2,135.70 is: 2,946.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.72 : 5,115.96 = 2,135.70 : x
  2. Step 2: Convert to fraction form
    3,708.72/5,115.96 = 2,135.70/x
  3. Step 3: Cross multiply
    3,708.72x = 5,115.96 × 2,135.70
  4. Step 4: Simplify right side
    3,708.72x = 10,926,155.77
  5. Step 5: Solve for x
    x = 10,926,155.77/3,708.72
  6. Step 6: Final answer
    x = 2,946.07

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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.