Home / 3,746.05-5,620.07-1,280.87

Finding the Fourth Proportional to 3,746.05, 5,620.07 and 1,280.87

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Solution

The fourth proportional to 3,746.05, 5,620.07 and 1,280.87 is: 1,921.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,746.05 : 5,620.07 = 1,280.87 : x
  2. Step 2: Convert to fraction form
    3,746.05/5,620.07 = 1,280.87/x
  3. Step 3: Cross multiply
    3,746.05x = 5,620.07 × 1,280.87
  4. Step 4: Simplify right side
    3,746.05x = 7,198,568.21
  5. Step 5: Solve for x
    x = 7,198,568.21/3,746.05
  6. Step 6: Final answer
    x = 1,921.64

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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.